Best 3 Gallon Fish Tank Heater

Aquarium Heater Small Fish Tank Heater Submersible 25W 50W 100W, Precise Temperature Control with Intelligent Memory Function, External LED Digital Temp Controller Suitable for Betta Fish Turtle

  • Built with Water Shortage Protection. SZELAM submersible aquarium heater is more sensitive and intelligent to resist water shortage. When the heater exposed to air or is not fully submerged, it will automatically power off and the external controller will display error code "E1"..
  • Small Aquarium Heater with Precise and Steady Temperature Control. Our aquarium heater has sensitive internal temp probe, which is more precise to control the water temp, making the temp difference within ±1℉ and providing suitable living environment for your aquatic creatures..
  • Top Quality Material Ensures More Safety. Made of heat-resistant thick quartz heating tube with black quartz sand, this upgraded fish tank heater features explosion-proof and anti-corrosion during heating, much safer than traditional heater. With SZELAM submersible aquarium heater, your beloved fishes will live happily during winter..
  • Safety Guarantee with CE & FCC Certification. SZELAM submersible fish heater is safe to your beloved fishes, as the power cord has CE & FCC Certification, which makes this aquarium heater much safer while heating better than other normal fish heater. Just try this, we won't let you down!.
  • 25 Watt Small Fish Tank Heater. This 25W mini size (6"*1") submersible fish heater....
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HITOP Bundled Goods of 4W Powerful Aquarium Pump and 600W Digital Aquarium Heater

  • Bundled Goods of  4W powerful aquarium air pump and 600W high-power aquarium heater are very suitable for 60-150 gallon fish tanks. Realize fish tank oxygenation and fish tank heating, and provide a comfortable living environment for your pets..
  • This 4W Aquarium air pump kit including: 4W aquarium air pump with 4.8ft cable wire Long air tube *2(4.9 ft *2) air stone*2 check valve*2 air tube fixing cup*2 T-connector*1.
  • Quiet aquarium pump:Most aquarium air pumps have only a single-layer casing. This aquarium aerator pump adopts the design of internal air pump + external black shark casing, which greatly reduces the noise, and the max noise does not exceed 35dB.
  • This HITOP 600W aquarium heater adopts a digital temperature control system, so it can display the set temperature and real-time power at the same time, which is clear to read. There is also a heating indicator to indicate the working status..
  • We provide 12 months warranty for our products..
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hygger 100W Aquarium Heater, Ultra Short Quartz Fish Tank Heater with LED Digital Display Thermostat Controller for 5-26 Gallon Freshwater Saltwater Tank

  • 【Explosion-proof and anti-corrosion aquarium heater】Heating rod heating body is made of explosion-proof quartz glass, nickel-chromium heating wire and silicon carbide heat-conducting material, and the fish heater shield is made of high-temperature resistant ABS material. Manufactured into a tank heater that is anti-corrosion, non-leakage, non-conductive, explosion-proof, and makes water heating faster..
  • 【Safety Guarantee】This full immersion aquarium heater build-in two temperature probe, when the fish heater is out of water or over temperature, it will automatically stop heating and send out a warning signal L1 or HH. And the heating rod will restart after it is completely submerged in water or cooled Work..
  • 【INTELLIGENT THERMOSTAT】 When the actual temp is lower than the set temp of the fish tank heater by 1.5°F/1.5°C, the indicator light will turn red, the fish tank heater will heat up to the set temp at full power, and the indicator light will turn blue color, then stop heating.Temperature Ranging from 59℉ to 93℉..
  • 【External Smart HD Controller】External controller with LED digital display, without getting hands wet. Each press of the submersible heater will change the set temperature by 1℉(1℃). Press and hold it for 5 seconds....
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FishCheers Preset 78℉ Aquarium Heater 250W,Submersible Thermostat Aquarium Heater for 75-85Gallon Fish Tank Suitable for Saltwater and Freshwater Aquariums

  • 【Application】: Aquarium preset 78°F heater 250W for 75-85gallon fish tank. Heater length: 11.02inch. Voltage: 115/230V..
  • 【Automatic Thermostat】: The heater is preset to a fixed temperature of 78°F, no need to adjust the temperature. The heater will automatically stop heating when heated to the preset temperature of 78°F.Perfect for beginners..
  • 【Overheat Protection】: The submersible heater has auto-protection system for overheating without water, the aquarium will automatically power off when there is a lack of water to prevent the heater from bursting, making it safer for your aquarium..
  • 【Safe and Convenient to Use】: The heater adopts quartz glass, which is explosion-proof. The aquarium heater comes with two silicone suction cups that can be placed vertically or horizontally in the tank. Please submerge the heater completely in water when using..
  • 【UL Certification】: The aquarium heater has the reliable UL certification. It can be widely used in freshwater and marine aquariums, aquaculture and hydroponic systems..
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FishCheers Preset 78℉ Aquarium Heater 150W, Submersible Thermostat Aquarium Heater for 35-55Gallon Fish Tank Suitable for Saltwater and Freshwater Aquariums

  • 【Application】: Aquarium preset 78°F heater 150W for 35-55gallon fish tank. Heater length: 8.07inch. Voltage: 115/230V..
  • 【Automatic Thermostat】: The heater is preset to a fixed temperature of 78°F, no need to adjust the temperature. The heater will automatically stop heating when heated to the preset temperature of 78°F.Perfect for beginners..
  • 【Overheat Protection】: The submersible heater has auto-protection system for overheating without water, the aquarium will automatically power off when there is a lack of water to prevent the heater from bursting, making it safer for your aquarium..
  • 【Safe and Convenient to Use】: The heater adopts quartz glass, which is explosion-proof. The aquarium heater comes with two silicone suction cups that can be placed vertically or horizontally in the tank. Please submerge the heater completely in water when using..
  • 【UL Certification】: The aquarium heater has the reliable UL certification. It can be widely used in freshwater and marine aquariums, aquaculture and hydroponic systems..
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Koller Products Replacement Filter Cartridges - Small, 6-Pack

  • REMOVES DEBRIS: Dual-sided poly-fiber floss removes fish waste and other debris..
  • FULLY ASSEMBLED: Ready-to-use cartridge contains premium activated carbon that keeps water clean and fish healthy..
  • ENHANCE FILTRATION: Specially designed to enhance filtration all the while keeping your fish in best health..
  • OPTIMUM FILTRATION: For optimum filter performance replace cartridge monthly or sooner if heavily soiled and reduced water flow..
  • NO GETTING HANDS WET: Easy to install, easy to replace, No Getting Hands Wet!.
  • SIZE SMALL: Fits Koller Products and Hawkeye power filters for the following aquariums: AquaTunes 2.5-gallon Aquarium with Sleep Sound Machine (B00HH7UVYO), AquaTunes 3.5-gallon Aquarium with Sleep Sound Machine (B00HH7UW1Q), AquaView 3-gallon (B01M4LNYWS), 4.5-gallon Aquarium (B01JS39E60), 5-gallon Aquarium (B00KIRR8BY), 6-gallon 360 Aquarium (B007R5C6CG), 6.5-gallon Aquarium (B0182CAHWS), 7-gallon Aquarium (B01JS2NNJA), Smart Tank 5-gallon Aquarium, Smart Tank 6.5-gallon Aquarium (B086D9B85Q), and Smart Tank 7-gallon Aquarium (B0865LG56Z)..
  • DIMENSIONS: 2.38" L x .75" W x 5" H. Product may ship in white SIOC packaging depending on demographic region..
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Submersible Aquarium Heater Fish Tank Heater with Dual Temperature Displays and Temp Controller Adjustable for Turtle Betta Fish Tank

  • ❀[300 watt heater] This 300 watt heater is suitable for 25-80 gallon water tanks, the heater length is 10.8 inches (about 27.4 cm), and the power cord length is 47 inches (about 119.3 cm) + 67 inches (about 170.2) Cm), please choose the appropriate wattage aquarium heater according to our size chart..
  • ❀[External temperature controller] This diving aquarium heater is designed to control the external temperature, allowing you to conveniently and safely adjust the temperature without taking the heater out of the water and taking risks..
  • ❀[Dual temperature display] Simultaneously display the water temperature and set the temperature, which can help you easily identify and observe temperature changes even at night..
  • ❀[High quality] Made of shockproof and shatterproof quartz, suitable for fresh water or sea water. In addition, the heat-insulating cover can protect your little fish from scalding..
  • ❀[Please note] The aquarium heater should be completely immersed in water. When cleaning the fish tank, changing the water in the aquarium or removing the heater, please unplug the pow....
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HIRO Aquatics Cubic Rimless Frameless All Glass Aquarium, Low Iron Rimless Glass Tank, White Leveling Mat Included (25X25X25cm)

  • LARGE ENVIRONMENT: Larger environments can house more fish or a greater variety of fish. Maintains water temperature. Essential for tropical fishkeeping.
  • KIT INCLUDES: one 55 gallon tank, EasyBalance Plus, TetraMin, AquaSafe, 6” fish net, 200W heater, WPF 60 Filter, Stick on digital thermometer, 24” Tetra hinged hood x 2, 2 plant multipacks and a boxwood plant, TetraCare brochure and instruction sheet.
  • LED LIGHTING: Included lighting adds the natural daylight effect to your aquarium, giving you illuminated viewing of the entire space.
  • ACTUAL TANK DIMENSIONS: 48.25" L x 12.80" W x 20.90" H.
  • WEIGHT: This aquarium tank weighs approximately 79 lb by itself. With water, total tank weight can reach 521 lb..
  • COMPLETE YOUR COMBO WITH THE MAJESTY STAND: The Perfecto Majesty Stand (ASIN: B00BUFU77U) properly supports the weight of this tank, while also providing storage for supplies..
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hygger Fish Tank Titanium Heater,500w 800w Fast Heating Aquarium Heater with LED Real-time Power Display,Submersible Freshwater Heater with External Digital Controller for 60-120 Gallon Fish Tank

  • ...o sensors is damaged, the display will display E1, and the heater will stop working. Although there is still one sensor that can work, it will increase the risk of "cooking fish". When an error code appears indicating 'E1', please contact us for after-sales service.500 WATT aquarium heater is recommended for 60-120 gallon freshwater aquariums..
  • 【SAFE 】 Beeping alert system will work when heater use in a wrong way. Submersible Aquarium Heater is constructed of explosion- proof titanium and The Plastic guard which prevents fish from coming into contact with the heating and prevent burnout..
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REPTI ZOO Reptile Aquarium Terrarium Wooden Stand and Cabinet with Adjustable Shelf for 48L x 18W inch Amphibian/Fish Sea Salt Water Tank Terrarium(Cabinet Only)

  • LARGE ENVIRONMENT: Larger environments can house more fish or a greater variety of fish. Maintains water temperature. Essential for tropical fishkeeping.
  • KIT INCLUDES: one 55 gallon tank, EasyBalance Plus, TetraMin, AquaSafe, 6” fish net, 200W heater, WPF 60 Filter, Stick on digital thermometer, 24” Tetra hinged hood x 2, 2 plant multipacks and a boxwood plant, TetraCare brochure and instruction sheet.
  • LED LIGHTING: Included lighting adds the natural daylight effect to your aquarium, giving you illuminated viewing of the entire space.
  • ACTUAL TANK DIMENSIONS: 48.25" L x 12.80" W x 20.90" H.
  • WEIGHT: This aquarium tank weighs approximately 79 lb by itself. With water, total tank weight can reach 521 lb..
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