12 best diy aquarium heaters

Product description

The Fluval M Submersible Aquarium Heater’s quality European manufacturing utilizes superior components and construction. The Fluval M150 Submersible Heater is ideal for use in freshwater and marine aquariums up to 45 gallons and has a temperature range of 66-86 degrees Fahrenheit. This sleek, compact heater can be trusted for exceptional performance and unsurpassed reliability. Unique only to the Fluval "M" series the reflective technology equipped in the Fluval M Submersible Aquarium Heaters helps maintain the aquariums' natural look as the heater reflects the colors of the surroundings.

Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a landmark breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Above and beyond its manufacturing role, Fluval prides itself on its charitable and educational efforts that give back to the fishkeeping community, whether it means helping to fund the protection of wild coral reefs or jumping on a plane to document endangered fish species halfway around the world. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

• Aquarium heater that blends into the aquarium environment with built-in reflective technology that mirrors the surrounding colors
• Computer-calibrated thermostat and easy-to-adjust temperature control dial
• Shock resistant Borosilicate glass and high density ceramic heat sick
• Easy to install with slim profile tube for easy placement
• 150-watt heater suitable for freshwater and saltwater aquariums up to 45 gallons with a 3-year warranty

User questions & answers

Question:	I have the fluval flex 32.5 gallon tank. which heater should i get? thank you
Answer:	Where do you live? I live in FL where the average temp of my fish room is 75. I have M200 (200W rated for a 65 gallon tank) on my 75 gallon tanks. If you live in Maine, the average temp is probably 60-65 of your fish room. you will need the M300 ( 300W rated for 80 gallons) or maybe 2 of them to heat the same 75 gallon tank. with that said, I think you will be find with the M100 or M50 will be fine for your 32 gallon tank. just make sure they will fit. when you set it up, put the heater in the tank, let it sit for a day or at least a few hours before you turn it on.. see what temp the tank is, turn the heater on the lowest setting and slowly turn it up to the match the tank temp. let it sit there for a hour or so, then set it to what ever temp you want. Don't trust the dial that states what the temp is, it may be off by 1 or 2 degrees. Be sure to monitor the temp for a few days to make any adjustments. Heaters will not change the temp of the tank instantly, it may take a few hours.
Question:	How long does it take to heat a 15 gallon tank
Answer:	The instructions say: "Wait 30 minutes before connecting to the electrical outlet. This allows the heater to adjust to the aquarium water temperature. Note that it may take up to 12 hours for the eater to attain the water temperature you have selected." That being said, my experience is that it is quite a bit faster than that. Of course, that depends on what temperature the water started at! (i.e., how cold is your room). Please note that thre 50 watt model is rated for 15 gallon MAX. That means if you want wiggle room, you might consider the 100 watt version. Again, however, my experience is that the 50 watt was adequate for my 15gallon. But my house is not cold.
Question:	Can it go compleatly under water
Answer:	Yes it can, "Cord and all" (but not the plug) according to the Fluval representitive I spoke to at Fluval customer service. I've had mine completely submerged ever since and havnt had any problems. Just remember not to keep it on if you have to empty tank water behond the bottom line.
Question:	Can you adjust the heat with this heater? Does it have a dial
Answer:	Yes, it's easy to adjust, and keeps the tank a constant temp.

Product features

Fluval M Submersible Heater

The M-Series submersible heater range provides exceptional performance, unsurpassed reliability and exclusive mirror technology to blend in with its surroundings.

Product description

High Quality, Break Resistant Quartz Glass Construction Fully Submersible Simple Installation Available In A Variety Of Sizes Suction Cups For Securing To The Aquarium Visible Temperature Setting For Use In Fresh And Saltwater

• High quality quartz glass
• Fully-submerisble
• Visible temperature setting
• For use in fresh or saltwater aquariums

User questions & answers

Question:	Does the heater havr to be fully submerged or can the top part be out of the water
Answer:	The top (with temperature settings) can stick out of the water if you want, but it doesn't have to. However, everything below the very top with the temperature settings MUST be underwater.
Question:	I have a 30gl. planter, I keep 2 gold fish in on my porch I did not want to bring them in. had a 50 watt heater in it but the water froze recommend
Answer:	gold fish are cold water fish....most people don't use a heater but I would say get a pond heater for that....the planter is holding the cold more than a tank would
Question:	will this work without problems in a 75 gal. tank, I keep my water at 80 degrees. Had another would only bring temp up to 76 degrees
Answer:	Yes i have mine in my 75gallon and its kepping water at 79.3 for me. Ive had mine for over a yr and it still works great!!
Question:	Is a 300 watt okay for 40 gallon tank
Answer:	Well it will certainly work but it's overkill. a 40 gallon should only require a 100 - 150 watt model. This one is cheaper so you might as well. That way if you ever upgrade your tank you already have a larger heater.

• ONLY heating outlet aquarium sensor heater for aquarium, reptile.
• It can be set to two different temperatures with its function of dual time cycle setting during 24 hours according to the day and night, which can more suitable for the needs of aquarium.
• This plug and play product is designed with dual LCD display, and offers the optional display of Centigrade or Fahrenheit, which makes it more humanized temperature control.
• The temperature can be controlled more accurately with its function of temperature calibration and temperature hysteresis.
• ℃ / ℉ Display can be chosen. Temperature calibration; Over-temperature and sensor fault alarm. Dual display window, be able to display measured temperature and set temperature at the same time.

User questions & answers

Question:	Would this thermostat work well for ball pythons
Answer:	I would say yes, I am using it for a tree frog. The frog is sensitive to temperature and this probe and controller has been doing an excellent job
Question:	can this be used with 5 gallon bucket heater 1000 watts? Would like to keep water 110 farienheight
Answer:	No the maximum set point on this is 99 degrees. It's designed for aquariums. Consider this for your application. Tighter set point and will work up to 230 degrees F. https://www.amazon.com/gp/product/B00V4TJR00/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I've been using this on one of my aquariums for months with a 0.3 degree set point variation.
Question:	Will this work for saltwater aquarium
Answer:	Yes, ITC-306T aquarium thermostat will work for saltwater aquarium.
Question:	How does this control 2 heaters w only 1 probe
Answer:	I’m so confused setting up 2 Colbalt 75 watt heaters at a temperature of 79 degrees F , want it to run 24 hours. I’m able to set up one , ( I think I’m getting the hang of it but when I try to setup the other I can’t . Can someone be so kind to walk me through the steps? I would really appreciate it so much as my inkbird has been sitting in its box for 6 months! Thank you in advance for your help! 😊

Product features

Main features

• Plug and play design, easy to use.
• Over-temperature and sensor fault alarm.
• Support reading with Centigrade or Fahrenheit unit.
• Temperature calibration.
• Maximum output load: 1200W(110V) / 2200W(220V).
• Dual display window, be able to display measured temperature and set temperature at the same time.
• Build-in ultra-capacitor, after fully filled, it can supply timer chip working for more than 20 days without electricity.

Temperature & Voltage

• Temperature Control Range : -50~99 °C / -58~210 ° F
• Temperature Accuracy: ±1°C (-50 ~ 70°C) / ±1°F (-50 ~ 160° F)
• Temperature Resolution: 0.1 ° C / 0.1° F ​

• Input Power: 100 ~240VAC, 50Hz/60Hz
• Temperature Control Output: Max. 10A, 100V ~240V AC
• Input Power Cable Length: 1.5m (5ft) ​
• Output Power Cable Length: 30cm (1ft)

• Fits for most standard aquarium heaters, not for airline / air tubing.
• Made of plastic and rubber. Perfect for fish tank, aquarium and any glass surface.
• The suction cup is 33 mm in diameter with 24 mm clip and can hold 1" diameter aquarium heater, PVC tubing or rain bar.
• Each suction comes with one clip. Keep your aquarium heater firmly in place with these suction clips.
• Package Content: 12 x Black Heater Suction Cups.

User questions & answers

Question:	Would Fluval FX6 inlet, outlet hose fits into this suction cup
Answer:	Heater definitely out take hose most likely but the ones I have on those came with canister filter same size cup but have about an inch extension on them to keep from being stuck right on it. I may give it a try though because mine detached and hanging loose. I have a box of these so I’m going to try it.
Question:	Would these fit a 250 watt eheim heater
Answer:	Thank you for your question. It fits for most standard aquarium heaters. The diameter of the suction cup is 33 mm with 24 mm clip and can hold 1" diameter aquarium heater.
Question:	Will these suction to stainless steel
Answer:	I purchased these for my aquarium but I don't see any reason why they would not work on stainless steel. They are large enough to actually do the job. Your call.
Question:	Can the cup be detached from the clip and used for maxi-jet power head
Answer:	Sure if you can attach it to the pump. I use the cups to hold a spray bar by drilling a hole just large enough to fit the nipple of the suction cup and it's been holding on since

• 🐬【Intelligent Water Sensor and Over Temperature Protection】This aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.
• 🐬【Explosion-proof Quartz Material】The submersible aquarium heater is made of high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger black protective container is scald-preventing for your aquatic organisms and your safety.
• 🐬【Rapid Heating System】The voltage of this fish tank heater is 100-120V/50-60HZ, power 500W, Universal two-pin plug, heater rod length 12.99 inch, 500W submersible heater for fish tank 60-120 gallon, Temp range: 63-94℉. The heating tube can conduct heat quickly and fully contact with water to achieve rapid heating effect.
• 🐬【Digital LED Display Controller】The external IC temp controller of the fish tank heater can show the water temp with 2 red LED digits. The temperature in Fahrenheit and Celsius is displayed, which can be switched by pressing and holding the button for a few seconds. To set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again.
• 🐬【Wide Range of Use】This 500W aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept. There are strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged.

Product features

How to set temperature:

Place both heater rod and probe inside the aquarium and keep both fully submerged.

Plug in power and you can see the red light indicator on and LED digital number display current water temperature.

Press button to your desired temperature which will blinks 3 seconds and then it return to current water temperature.

The heater begins to heat.

HiTauing 2021 Upgraded Aquarium Heater

This aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.

Multi-scene use

This aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept.

Beautiful blue smart LED display controller

Temperature range: 63°F~94°F , It is very easy to adjust the temperature you need. There is a temperature sensor inside the controller, you can easily control the water temperature by adjusting the button.

Detachable anti-scald shell

This heater is made of explosion-proof quartz tube, the hard plastic shell can prevent hands and fish from scalding, easy to disassemble, and convenient for dirt cleaning after a long time of use.

Fixed suction cup

There are two powerful suction cups on the side, which is convenient for you to fix the heating rod on the side or bottom wall of the fish tank for better constant temperature heating.

Warm Tips:

1.Always keep heater rod and probe fully submersible.

2.Before take out the heater, please disconnect power and wait for 30 minutes to cooling down.

3. This heater is not for suitable for use in acrylic tank.

4. Do not bury it undergravel as gravel not conduct heat.

• TWO PACKAGE OF THERMOSTAT DELIVERY RANDOMLY- Packed with digital thermostat and under tank heater. Reptile under tank heat pad provides your reptile gentle and constant warm 24 hours, and monitors and control the temperature all the time.
• UPGRADED VERSION - Upgraded adhesive material of under tank heat pad is more solid than similar products in the market. It effectively decreases and eradicates the probability of melting and separating.
• MOUNTING - Reptile heat mat with thermostat optional mounting on bottom or side of your terrarium. Rubber feet enclosed for bottom mounting to slight elevate terrarium and allow excess heat to escape. (IMPORTANT)
• SIMPLY SET UP - Heat mat thermostat simply set the temperature probe, plug-in the controller, and use the large 3-button interface to choose your desired temperature setting. Digital display of seedling heat mat thermostat available in Fahrenheit and Celsius.
• SPECIFICATIONS - Hermit Crab Heater Size: 8” x 12” ; Voltage: 120 volt; Power: 16 watt; Temperature control range is 68-108°F, Digital Reptile Thermostat temperature display range is 32 -140°F.

User questions & answers

Question:	I've had mine for almost a month and it was working fine but now doesn't heat up at all. The work light is on but it never heats up. What can I do
Answer:	Is it plugged in properly? Is the thermostat hooked up and set to the right temps?
Question:	has anyone who actually knows how to use heat pads had any problems? I need one for some belly heat for my ball python during winter months
Answer:	I use this for two Ball Pythons and so leopard gecko and it works well ( make sure you get the appropriate size for your reptiles- my leopard gecko uses a smaller Matt than the snakes) but the thermostat isp really great for monitoring and maintaining temperature one the mat.
Question:	Why isn’t my pad heating up fast
Answer:	I bought the same pad and plugs it in set it to 80 degrees and it wouldn't heat up past 70 I even left it overnight but it didn't work
Question:	Can you apply this to a plastic bin
Answer:	With the included thermostat it would be fine for plastic containers. I use it on my sterilite container with no issues.

Product features

Uniform Heating

24-hour primary or secondary heat source for tropical or temperate reptilian species

Upgraded Adhesive

All Heating Pads are upgraded, we changed the adhesive material to a new one that is more solid

Easily Installation

AIICIOO Under Tank Heater permanently adhere to your terrarium or incubator, forming a solid bond for optimum heat transfer

Grounded Outlet

Temperature control range: 68-108°F

Temperature display range: 32 -140°F

The cord for the temperature probe and grounded 3-prong plug measure an extended 6 feet in length, designed to suit almost any application you can imagine.

Fahrenheit or Celsius readout

Fahrenheit - Press and hold the 'Up' button for 3 seconds to display in Fahrenheit.

Celsius - Press and hold the 'Down' button for 3 seconds to display in Celsius.

Easy to Set Up

Press the UP or DOWN button to adjust the temperature

The thermostat’s LED screen shows the numbers as you cycle through them. Press the SET button again to set the chosen temperature.

• 【Quickly Heat Up】Voltage 110-120V/60HZ, power 500W, US three-pin plug, heater rod length 10.5 inch. Fast heating up aquarium heater, it takes about 3 minutes to heat 3.5 gallon water up 3℉
• 【Auto on and off 】Reliable submersible aquarium heater. It will stop heating when the water temp reaches to the set temp, please note that the water temp may go up 1℉ more because of the waste heat. When the water temp is cool down to 1℉ less than the set temp, the tank heater will restart heating
• 【Fully Submerged】The heater tube and the separate sensitive thermometer must be completely submerged under water all the time. Please unplug it and wait it to cool down before you removing the heater or doing water change
• 【Led Display Controller】Only show Fahrenheit degrees. To set the temp, just press the button over and over until the screen displaying the temp you desired, then stop and wait the digit flashing for 3 times, the setting is done and the led shows the current water temp again
• 【For long Time Use】Very durable and explosion-proof aquarium heater, can be used for saltwater and freshwater aquariums, service life can be 3 years or more. With low profile black plastic guard, easy to hide in the tank

Product features

How to use the temp setting?

Temp Setting:

Press the button on the controller over and over, the set temp digits will go circularly from 61 to 90, when you set it to the digit you want, stop and wait the led flashing for 3 times, then the setting is done and the led will go on displaying the water temp.

Heating indicator light

There are 2 indicator lights below the display screen, the left light will on red when the heater is heating, the right light will on green when it stops heating.

Over temperature protection

The fish tank heater will auto shut off if water temp is over 97℉, and will automatically turn normal work when water temp is less than 95℉.

Aquarium heater use direction

• Please don't plug in before the heater is well installed.
• Please wait for about 6 seconds before you setting the temp.
• Keep the heater and thermometer fully submerged all the time.
• Place the heater vertically or horizontally near the water intake or on the way of water flow.
• Don’t bury the heater under gravels, mud or sands.
• Keep tank water circulation as far as possible.
• Place the thermometer far away from the heater, keep the temp controller away from water.
• Wait the heater tube to cool down before moving it or changing the water.

Measurements

500W for 60-120 gallon fish tank

Heater rod length: 10.5 inch

Generally, when we choose a heater for the tank, we can base on that 3.8 wattage to 7 wattage per gallon water.

When the weather gets cold and room temp is lower than 50℉, please choose a larger wattage heater than normal recommended.

The heater power cord is 6ft, the controller power cord is 5ft, the thermometer cord is 4.6ft.

• Can be used in both freshwater and saltwater, applicable for 10~25 gallon fish tanks.
• Adjust temperature by top red knob, range 68°F-93°F. Tube temperature displayed.
• Water-tight of IP68 sealing. 2mm shatterproof quartz housing, bottom clash-proof cover. (NOTICE: Can’t be used even just cracked a tiny bit, pls contact us for replacement)
• Measurement 9.7" x 1" (L x D). Only allowing for vertical or horizontal installment.
• Package include aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1.

Product features

Uniclife 100W Aquarium Heater for 10- 25 Gallons

An aquarium heater is an essential device for warming water in your fish tank. HT-6100 Anti-Explosion Fish Tank Heater is suitable for up to 25 gallon aquariums, which can help your tropical fish and other aquatic pets to keep away from stress and disease by providing proper temperature. The heater will keep your tank at a constant temp especially in cold days. A good range for most fish is 76℉ to 80℉

Easy Adjustment

• By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
• The red indicator light on while heating, automatic shut-off when reach the temp.

Submersible

• The aquarium glass submersible heater must be fully immersed.
• Install it either vertically or horizontally by attaching the suction cups to the glass of the tank.

Stick-on Thermometer

• Distinguishable blue color shows the current temperature of your aquarium water.
• Monitor and maintain a constant warm environment for your fish's health.

• { RUNNING DRY & OVER-HEAT PROTECTION } This fully submersible fish tank heater maintains proper temperature for your fish in a safety way, auto shut off when over-heats, resets when it cools down. The heater will shut off when removed from the water, and resume functioning upon return
• {EASY TO READ LCD DISPLAY} Build-in external temp controller, easy to read LED digital number shows real time water temperature and set temperature. Indicator light let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached
• {SHATTERPROOF CORROSION RESISTANT} Corrosion resistant, shatterproof titanium tube construct heats fast, nealy unbreakable for both saltwater and freshwater aquariums. ABS plastic protective sleeve prevents fish from being scald
• {EASY TO USE} Easy to set temperature without getting hands wet. Just keep pushing the button. It will cycle through all the set temperatures. Temperature can be precisely adjusted from 68 to 93°F (20°C ~ 34°C), electronic thermostat accurate to +/- 2 degrees Fahrenheit differences
• {FOR 120-180 GAL} 800 watt aquarium heater, voltage 110-120 Volts, heater rod 9.6 inches long, suitable for tank capacity 120-180 gallon freshwater and saltwater aquariums

User questions & answers

Question:	My heater stopped workin shows ec and er codes. is only 4 months old
Answer:	Mine did too. How did you return it? My return window closed through Amazon.
Question:	My heater screen goes black and also now it says er(error) and won't heat at all. I have not even had it 3 months yet. Can I get past the code
Answer:	Same thing happened to mine, I assumed it was from the humidity of being near my sump so I ordered a replacement. Contact their customer service they were great to work with
Question:	So how do we use it if we do have gravel on the bottom of our aquarium? Why can it not touch gravel
Answer:	You can place it horizontally or vertically as long as it is fully submerged and not touch the gravel. This is because the heat differential between the untouched portion of the heater’s glass tube and the area in contact with the substrate can stress the surface and cause micro-cracks. For this reason, make sure the heater’s surface is free and clear of all obstructions.
Question:	Only one wire length is listed at 5ft. There are two cords, one to the wall and one between the controller and heater. Are both cords 5ft
Answer:	Yes, both cords 5ft.

Product features

provides a fast and safe way to heat up and maintain proper temperature for your fish

• IP68 100% Waterproof, Fully Submersible
• Shatterproof, corrosion resistant titanium heating element
• Auto shut off when over-heats, resets when it cools down
• ABS plastic protective case prevents fish from punching and scald
• Adjustable heat setting from 70°F to 94°F
• Easy to read water temperature
• Ideal for used in 60-180 gal freshwater and saltwater aquariums

Saving Energy

The heater heats up your aquarium at full speed once it plug in. You can see MAX on the screen. When it reaches the proper temp, it stops.

Once the water temp drops 1 degree or so, the heater heats up again in low energy to keep the proper temp. You can ECO on the screen.

In this way, the heater saves energy greatly.

How to set temperature:

1. Place heater rod underwater and fix it on the wall
2. Plug in power and you can see LED digital number flashing 3 times and shows current water temperature, red indicator lights onn
3. Press set button to the desired temperature which will blinks 3 seconds and starts to heat the water
4. Once it reach desired temperature, indicator light switch to green

Attention:

1. Make sure that the heater doesn’t touch sand or gravel on the tank bottom.

2. To avoid the device overheating and insure its better performance, it’s better to put it close to the tank filter.

3. Don’t plug in the aquarium heater if it’s not completely drown into the water.

4. Unplug the heater first before water change

TROUBLESHOOTING

The screen keeps blackout

• Reason: the heater is interfered by electronic components
• Solution: contact seller to replace it

Er code

• Reason: heater rod come out of water or temp probe defective
• Solution: unplug it and take it out for 1 hour, then restart. If not working, contact seller.

Suction holder not fit

• Solution: contact seller to get a new holder

Product description

Features:

Used to secure tubing, water hose, plant and decoration etc Suction cups will hold item with diameter up to 3/4 "

High quality plastic, long life time

Clear in color, easy to be blended into background

Includes: 6 pieces of suction cups

Package includes:

6 pieces of suction cups

• Used to secure tubing, water hose, plant and decoration etc
• Suction cups will hold item with diameter up to 3/4 "
• High quality plastic, long life time
• Clear in color, easy to be blended into background
• Includes: 6 pieces of suction cups

• Ideal for 5-15gal fish tanks, can be installed in both fresh and saltwater.
• Red rotatable knob on top for adjusting the temperatures between ranges of 68°F-93°F. Visible temperature displayed allows accurate temperature maintain.
• Please notice the red indicator light is on while working, will automatically turn off when temperature reached. Carefully check external condition before use. Recommend testing before introduce to fish.
• Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 8.2" x 1" (L x D)
• Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The color of number will change to blue to indicate the temperature).

User questions & answers

Question:	Does this device self-regulates? Meaning, if you set the temperature for 80 degrees, it will turn on and off by itself to maintain that temperature
Answer:	Never received. Envelope arrived empty, amazon refunded.
Question:	Ok for 2.5 gallon tank
Answer:	Not sure - I have a 10
Question:	Can you bury this heater under gravel? Or will it overheat because of lack of water movement
Answer:	You should not bury it.
Question:	Would this heater be considered as explosion proof? Thnx
Answer:	You're supposed to keep the water at the indicated level to prevent explosions.

Product features

Uniclife 25W Aquarium Heater –5 Gallons

An aquarium heater is an essential device for warming water in your fish tank. HT-6025 Anti-Explosion Fish Tank Heater is suitable for up to 5 gallon aquariums, which can help your tropical fish and other aquatic pets to keep away from stress and disease by providing proper temperature. The heater will keep your tank at a constant temp especially in cold days. A good range for most fish is 76℉ to 80℉.

Easy Adjustment

• By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
• The red indicator light on while heating, automatic shut-off when reach the temp.

Submersible

• The aquarium glass submersible heater must be fully immersed.
• Install it either vertically or horizontally by attaching the suction cups to the glass of the tank.

Stick-on Thermometer

• Distinguishable blue color shows the current temperature of your aquarium water.
• Monitor and maintain a constant warm environment for your fish's health.

Product description

Hygger digital quartz aquarium heater is specially designed for medium fish tank use, fast heating up for 15-30gallon aquariums.

It comes with 1 quartz heater, 1 IC temp controller and 1 thermometer, the cables are all long enough for use indoors.



Main features of submersible heater:

1. Fast heating and reliable, fully automatic control.

2. Black plastic heater guard with suction cups

3. For freshwater and saltwater use

4. The controller with memory function in case of power-down.



How to use the temp setting?

Press the button on the controller over and over, the set temp digits will go circularly from 61 to 90, when you set it to the digit

you want, stop and wait the led flashing for 3 times, then the setting is done and the led will go on displaying the water temp.



Heating indicator light

There are 2 indicator lights below the display screen, the left light will on red when the heater is heating, the right light will on green when it stops heating.



Over temperature protection.

The fish tank heater will auto shut off if water temp is over 97℉, and it will automatically turn normal work when water temp is less than 95℉.



Use directions

1. Keep the heater and thermometer fully submerged.

2. Don’t bury the heater under gravels or sands.

3. Keep the temp controller away from water.

4. Keep water circulation as far as possible.

5. Unplug the heater and wait it cool down before doing water changes.



Specification:

Voltage: 110-120V/60HZ

Power: 200W

Heater tube material: quartz glass

Plug: three-pin US plug

Power cord: heater cord 6ft，the controller cord 5ft, the thermometer cord 4.6ft

Heater tube length: 10.5 inch

Temp control range: 61-90℉

Temp accuracy: ±1℉

Suggest for fish tank: 15-30 gallon

• 【Fast Heating Up】voltage 110-120V/60HZ, power 200W, US three-pin plug, heater rod length 6.3 inch, 200W submersible heater for fish tank 15-30 Gallon. The heater power cord is 6ft, the controller power cord is 5ft, the thermometer cord is 4.6ft. Temp range: 61-90℉. Fast heating up aquarium heater, it takes about 3 minutes to heat 3.5 gallon water up 3℉
• 【Fully Automatic Control】very easy and reliable to use. After finishing the temperature setting, the fish tank heater will run automatically by itself. It will stop heating when the water temp reaches to the set temp, please note that the water temp may go up 1℉ more because of the waste heat. When the water temp is cool down to 1℉ less than the set temp, the tank heater will restart heating
• 【Must be Fully submerged】with strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged. The thermometer should be away from the heater and keep water circulation as far as possible. We provide 1 year warranty for this heater, if get any issues, just contact the seller directly
• 【Digital LED Display Controller】the external IC temp controller can show the water temp with 2 blue LED digits. Only show Fahrenheit degrees. To set the temp, just press the button over and over until the screen displaying the temp you desired, then stop and wait the digit flashing for 3 times, the setting is done and the led shows the current water temp again. The controller is connect with separate sensitive thermometer
• 【Quartz Tube & Plastic Guard】With high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, service life can be 3 years or more. With low profile black plastic guard, easy to hide in the tank. The guard can prevent your aquarium pets from burned, the gaps on the guard is about 3mm, no worries for fish stuck. The plastic guard mustn't be exposed to air when the heater is heating

User questions & answers

Question:	Length of this heater
Answer:	Hi, the length of the heater is 6.3inch.
Question:	Does it cut off when it's out of water
Answer:	Hi, no, it will not cut off when it's out of water, please make sure the heater fully under water all the time.
Question:	Is the heater 110V or 220V
Answer:	The heater is 110V.
Question:	Will this work for a biocube 32 gallon
Answer:	Hi, yes, this heater can be used for a 32 gallon fisn tank.