Top 10 heater for 3.5 gallon betta tank [2022]

[imga_totalreview] reviews were considered when writing our recommendations for the in this article.

Comparison Chart of Top 10

1. Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt

  • All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.
  • The HT10 uses a built in electronic theromstat to automatically maintain water at 78° F which is ideal for most tropical fish. No adjustment is requried.
  • Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
  • The HT heater is fully submersbile and can be installed vertically or horizontally. It’s small footprint makes it easy to conceal behind plants or other décor.
  • Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.

2. hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank, Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta, Turtle

  • 🐠【Compact Small Heater】110-120V/60HZ oval shape design little aquarium heater, fast heating for small fish tank. 50W tank heater is for 1-6.5gallon, 100W tank heater is for 6.5-13 gallon. Heater Dimension: 2.7×1.4x 4.5 inch. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater, it’s easy to install it on to glass, acrylic or plastic tank
  • 🐠【External Controller】easy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63℉ to 94℉, temp accuracy 1℉. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done. Keep the controller away from water, it’s not waterproof
  • 🐠【Digital Display】with led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. The led will display the set temp digit only when you press the controller
  • 🐠【Reliable Thermostat】this an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. The tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1℉ off the set temp. If the water temp is over 95℉, the heater will auto shut off and led displaying HH, it will work normally again when the water temp is lower than 95℉
  • 🐠【Shut off When Out of Water】please note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying E1, when fully in water again it will return to normal work again

3. Koller Products AquaView 3.5-Gallon Fish Tank with Power Filter & LED Lighting

  • FUN and REWARDING: Are you looking to buy an aquarium for your family? If you are, you are going to want to look at this fish tank. Owning an aquarium can be a really fun and rewarding experience and an ideal way to teach your child the responsibility of pet ownership.
  • DAZZLING COLORS: Energy-efficient LED lighting with 7 dazzling color selections to brightly illuminate your fish, choose daylight white, blue, green, amber, aqua, purple, or red.
  • COMPLETE FILTRATION: Powerful internal power filter cleans and purifies aquarium water at a flow rate of 25 gallons per hour effectively removing organic pollutants including discoloration, odors, heavy metals, and toxic gases; uses Koller Products XS replacement filter cartridges (AQ05FC-30).
  • OPTIMUM VIEWING: Crystal-clear clarity so good that most think it’s glass, made of impact-resistant plastic providing leak-proof assurance, unlike glass tanks glued together with silicone, this one-piece tank puts to rest any worries or concerns about possible leaks.
  • TRENDY DESIGN: Unique shape allows viewing from multiple angles anywhere in the room.
  • PROVIDES WELLNESS BENEFITS: Aquariums can provide stress relief.
  • DIMENSIONS: 12 L x 8.75 W x 13.75 H Inches.

4. PGFUNNY 25W Aquarium Heater, Fish Tank Heater for Betta Smart Thermostat, Slim Design Fit 3 to 5 Gallon Tank, with Thermometer Strips

  • 【Fully Automatic Temperature Control Design】: The Aquarium heater equipped automatic temperature control system, The temperature regulates automatically between on 77℉ – 82℉ depends on the water temperature in your fish tank. When the water temperature is lower than 77℉, It will start to heat; when the water temperature is higher 82℉, the heater will automatically turn off.
  • 【Suitable for 3-5 Gallon Tank】: The 25W fish tank heater design fit for small fish tanks which can contain 3 to 5 gallons of water. If there is an area of sand or decoration in your tank, the water volume will lower than the tank bulk, you need to select another lower power heater to ensure it will not overheat.
  • 【Advanced Materials】The small betta heater is made of sturdy engineering nylon and glass fiber, which is flame retardant, constant and stable. the energy-efficient heater measure 5.35“ * 0.9” * 0.63“(L*W*H) suitable for aquarium pets such as turtles and fry.
  • 【Come with Thermometer Strips】: By using the Thermometer Stripe, you will be able to monitor. An easy to identify blue color shows the current temperature of your aquarium water. Temperature Stripe is for reference only. Note: The temperature strips should stick on the outside of the fish box and level with the heater. due to the different materials of glass, the shown temperature may be delayed.
  • 【Quality Assurance】: This product fish tank heater has certificated by CE, ROHS, FCC, and UL1018. Anti-explosion, Waterproof, Scald-preventing, safe operation for pet betta fish. Working power 25w, frequency: 50/60Hz, voltage: 110-120V, waterproof rating IP68.

5. Betta Fish Tank Heater, 25W Mini Aquarium Heaters Free 2 Artificial Plants 1 Stick-on Thermometer Strip 2 Suction Cups, Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank

  • Betta Fish’s Favorite Gifts: ZEETOON Fish Tank Heater Suitable for all kinds of aquarium pets, Betta, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. Your little fishes and turtles will no longer fear the winter! 2 Aquarium Decor Artificial Plants make their homes beautiful not boring. 1 Stick-on Thermometer Strip, Eliminate your worry of not confirming the heating temperature
  • Mini Sized- Fully submersible compact betta fish heater Gift with 2PCS Aquarium Decor Artificial Plant. Specific perfect for mini aquarium under 5 gal/20L.for all shapes and materials fish tanks, whether it is glass or plastic, all can be used. ZEETOON Mini Heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. intelligent temperature regulate, very easy to use.
  • Smart Control: Adopted intelligent circuit board, with a precise sensing probe and thermostat heating system. Unlike other conventional heaters, need you to manually adjust the temperature. Our Smart Aquarium Heater just plug the power cable then it will work. It works will automatically turn on/off to achieve the setting temperature constantly and stably 73ºF-82ºF(25℃-28℃), Energy-saving life, you will be at your fingertips!
  • Smart Thermostat: ZEETOON Mini Heater different from a manually adjusted heater. Our heater automatic temperature regulate on 73ºF-82ºF(25℃-28℃) , no need to set. Prevent electric shock and burns. Keep you and your family safe. Position it near a strong water flow for whole aquarium are in the same temperature. The outlet of filter is ideal. When there is a heater in the fish thak, do not put your hand in to the water
  • High Quality: Made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. This product have certificated by CE, ROHS, FCC, UL certifications. We provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it.

6. PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

  • ★【Betta Heater】This Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.
  • ★【Quick and Easy Installation】:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.
  • ★【How it Works】: Plug in, red light turns on, the heater will start working until water temperature up to 78°F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°F. Accuracy:±3°F
  • ★【Note】: Do not operate or leave product plugged in when your water tank is out of water, heater should be fully submerged into water. It is better to install a water pump to help water circulating while heating.
  • ★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

7. VIBIRIT Aquarium Heater,Betta Fish Tank Heater 25W Smart Small Aquarium Heater,Energy Efficient Submersible Thermostat + Thermometer Sticker

  • 🐠【Fully Automatic Temperature Control Chip】VIBIRIT submersible aquarium heater automatically adjusts the temperature between 75°F and 82°F (24°C to 28°C). And will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient.
  • 🐠【Advanced Materials】 sturdy engineering plastic. It has anti-explosion, anti-scalding function, high temperature resistance and high safety. Suitable for aquarium pets such as turtles and fry.
  • 🐠 25W Fish Tank Heater is suitable for 3 to 5 gallons and can be used in turtle fish tanks and aquariums. The super-designed suction cups hold the heater tightly in the aquarium. Easy to hide in the water tank.
  • 🐠【Included Temperature Sticker】 You can stick the temperature sticker on the outer glass. The easy-to-recognize blue color indicates the current temperature of your aquarium water. Temperature bar is for reference only.
  • 🐠【Parameters and Quality Assurance】 working power 25w, frequency: 50/60Hz, voltage: 110-120V, waterproof rating IP68. This fish tank accessories has passed CE, ROHS, FCC certification. Explosion-proof, waterproof, anti-scalding, high temperature and other safe operation.

8. Aqueon Flat Submersible Heater 7.5 Watts

  • Fully submersible
  • Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank
  • Quick and easy installation
  • Shatterproof construction
  • Can be used with glass or acrylic enclosures
  • Note: Do NOT operate or leave product plugged in when it is outside of water
  • Warms aquarium water up to 6°F above ambient room temperature
  • 7.5 Watt works best for 1 to 3 gallon fish tanks

9. DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

  • 🐠25W Betta Aquarium Heater: Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish!
  • 🐠Precise And Constant Temperature: No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78℉, the heater starts to heat and the red light is on. When the temperature reaches 78℉, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
  • 🐠The Smallest 25W Betta Heater: For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can’t even find it. Very MINI!!
  • 🐠Safe And Durable: Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
  • 🐠One Year Warranty & Satisfaction Guarantee: This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!

10. Tetra ColorFusion Starter aquarium Kit 3 Gallons, Half-Moon Shape, With Bubbler And Color-Changing Light Disc

  • AQUARIUM KIT: Half-moon shape allows 180-degree panoramic viewing – starter kit has everything you need
  • BUBBLE CURTAIN Bubbling disc automatically cycles through a rainbow of LED light colors
  • INCLUDES FILTER: Includes air pump-driven Tetra Whisper Internal Power Filter to keep your tank clean and provide a healthy environment for pet fish
  • AIR PUMP Drives both the bubbling disc and the filter
  • CONVENIENT Clear canopy has a hole for easy feeding

Similar Posts