Reviews 4gallon Fish Tank Heater

Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W

  • [PREMIUM SHATTERPROOF GLASS]Made of shatterproof glass and BPA-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.3 FREE artificial aquarium plants as ornament in your tank..
  • [NO LONGER CHILL YOUR FISH]Automatically regulate and maintain water temperature，imitate the original ecological environment for your tropical fish.Provided fish with warm water environment.Perfect to apply to fresh and salt water..
  • [ADJUSTABLE TEMPERATURE]Temperature range: 68°F~93°F.25W heater:suitable for fish tank within 7 gallons,Length:7.8".Easy to adjust temperature by the aquarium heater that suit more species of fish..
  • [AUTOMATIC CONSTANT TEMPERATURE]When water temperature reaches set value,the indicator light will be OFF and the heater will automatically stop heating.The heater will automatically start heating and indicator light will be ON if water temperature is low.You could place heater horizontally or vertically..
  • [ATTENTION]Please place the heater near place (filter or pump) of water flowing to keep more even water temperat....
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JEREPET 200W Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display and External Temperature Control,Suitable for Mini Freshwater and Saltwater Tank

  • Specification:200W aquarium heater,suitable for the tank from 25 to 45 gallons,temperature range：68-94°F.
  • 5 feet cable ,AC 110-120V,mini size :2.2*4.7*1.1 inches.
  • Over-temperature and low water level protect:Jerepet 200W submersible fish tank heater will be automatically stop heating when temperature over 95℉(35℃) or the heater out of water, safety of your fish, turtle and frog.
  • External Controller:preset the temperature by pressing the button on the cable ,safty and easy to use.
  • LED digital display:real time LED termperature and working status digital display,no need another thermometer.
  • Marine water and fresh water use: can be used in saltwater or freshwater tanks, used as turtle tank heater, betta fish tank heater frogs newts tank heater.
  • NOTE:This heater have the step heating feature, the heater will turn off and on automaticlly.
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DaToo 10 Watt Small Aquarium Heater Mini Betta Flat Fish Tank Heater for 1 Gallon 1.5 Gallon

  • PERFECT MINI HEATER FOR 1~1.5 GALLON TANK - For a Betta breeder with a 1 to 1.5 gallon small tank, it is very difficult to choose a suitable heater. Because most of the heaters on the market are too big for this small tank. This not only affects us to watch our beautiful Betta, but also reduces the activity space of the Betta. Now DaToo Mini Aquarium heater can help you solve this problem. Ultra-small and thin size, perfectly hidden in a 1~1.5 gallon tank, your Betta will be happy with it! !.
  • CONSTANT TEMPERATURE & NO NEED TO ADJUST - DaToo 10W MINI Aquarium Heater can automatically maintain a constant temperature between 75°F and 82°F (depending on the external environment), no need to set. This temperature range is ideal for most tropical fish and is very beneficial for the reproduction of betta and promotes their metabolism. With no extra work, just plug it in and the DaToo 10Watt Small Fish Tank Heater will help your fish stay healthy and comfortable. Great for kids!!.
  • 24V SAFE VOLTAGE & POWER OFF AFTER LEAVING WATER - The output voltage of the DaToo Betta Heater is only 24V, which not only ensures the safety of the fish, but also ensures the safety of the user. No need to worry about leakage, you can rest assured to use it for your children. The....
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HITOP 600W Titanium Aquarium Heater - Digital Fish Heater with LED Temp Display and External Controller, for Large Fish Tank 75~180Gallon

  • [Digital dual temperature display] 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. For tank 75-180gallon..
  • [Titanium alloy heating element and shatterproof] The heating element is made of titanium alloy, which is strong and corrosion-resistant compared with other materials, so it is shatterproof and can be used in both freshwater and seawater. The impact-resistant sturdy cover makes this heater very suitable for large fish tanks and turtle tanks..
  • [External controller] No need to take out the heater from the fish tank to set or adjust the temperature, you can operate it through the external controller of this fish tank heater, easy to use. The temperature setting range is 64.0°F~93.0°F (18.0°C~34.0°C)..
  • [Accurate temperature control] With dual probe design, this submersible tank heater can detect the water temperature in time and accurately, and automatically start and stop heating according to the water temperature, error within 1 degree..
  • [Overheating protection device] Built-in additional overheating protection device, when the temperature in the fish tank....
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Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78℉for 1-6 Gallons Freshwater & Saltwater Tanks

  • 【25W Aquarium Heater】Orlushy 25w fish tank heater can be applicable to 1-6 gallons tank. It is 4.7 inches in length, ideal for use in low water level and won’t take up mech place, easy to hide in small tank. Please fully submerged the heater vertically into water in fish tank, and horizontally into water in turtle tanks..
  • 【Easy to Operate 】This aquarium heater is automatic constant temperature heating when the power is switched on. The preset temperature is 78℉. Accuracy is ±3℉. Stair shape heating that red light is on and heater starts to intermittently heat the water to the preset temp, saving energy and electricity. When green light is on, heater stops working and maintains constantly 78℉..
  • 【Durable & Material】 The durable material of the heater ensures safe operation. The outer shell covering the whole body of the heater is made of heat-resistant ABS material that it won’t deform and melt under high temperature. The heating rod is made of nickel-chromium heating wire to faster heating rate, and non-corrosive quartz glass..
  • 【Cautions】 1.Please ensure the heater is 100% submerged into the wa....
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AquaMiracle Adjustable 100W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 10-20 Gallons

  • SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market. It is only a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F..
  • ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled fish heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate..
  • DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”!.
  • MEMORY FUNCTION – The last setting is stored in ....
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AquaMiracle Adjustable 200W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 20-40 Gallons

  • SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market. It is only a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F..
  • ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled fish heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate..
  • DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”!.
  • MEMORY FUNCTION – The last setting is stored in ....
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AquaMiracle Adjustable 150W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 15-30 Gallons

  • SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market. It is only a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F. 4 sizes for 10/20/30/40 Gallon tanks..
  • ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled fish heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate..
  • DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”!.
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AquaMiracle Adjustable 50W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 5-10 Gallons

  • SUPER MINI SIZE – This aquarium heater is SUPER SHORT in length – might be the shortest heater in the market. It is only a bit more than HALF of the length comparing with the traditional fish heaters! The innovative super short length perfectly solves the headache of the fish keepers on the traditional aquarium heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F. 4 sizes for 10/20/30/40 Gallon tanks..
  • ACCURATE TEMPERATURE – Thanks to the intelligent inverter technology, with the in-built chips the thermostat keeps the heater at a constant temperature at an accuracy of 1F, much more accurate than the traditional knob-controlled fish heaters. The thermostat shows 2 readings – the current temperature and the set temperature – very easy to operate..
  • DRY RUN / OVERHEATING PROTECTION – Full consideration of safety. With the multiple protections this fish tank heater will stop working when the water level is lower than the minimum water level (DRY RUN PROTECTION) or when the water temperature exceeds 97F (OVERHEATING PROTECTION). You are free from “cooking fish”!.
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YOFOTHS Aquarium Heater 25W/50W/100W/200W, Small Fish Tank Heater, Temperature Adjustable Mini Tank Heater for 1/5/10/20/30/40 Gallon, External Temperature Controller (50W(3-10Gallon))

  • 【50Watts Small Fish Tank Heater】 This Aquarium Heater is suitable for 5-10 gallons tanks, Mini size can well fit your mini tanks. Voltage 110-120V, power cord length is 52”, Suitable for freshwater and saltwater. Meet the growth temperature for turtle, Fighting fish,Guppy, Goldfish, Neon Tetra, Gourami, Peaceful Betta, Pterophyllum, Dwarf Gourami, Pterophyllum Scalare, Betta Smaragdina, Koi, Corydoras, Anabantoidei, Paradise Fish, Clownfish,swordtail…..
  • 【Precise and Constant Temperature】An intelligent IC chip controls the heater’s temperature. The temperature accuracy is 1℉. The fish heater will automatically start heating when the water temperature is lower than the set values and stop heating when the water temperature reaches the target..
  • 【External Temperature Controller】Adjust the temperature from 64℉ to 93℉, This submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe for you to set the temperature, No need to put your hands in the water to adjust the Aquarium Heater temperature..
  • 【Prevent for Over Heating and Out of Water Protection】 The heater will cut off power and stop heating automatically when the fish tank heater is out of water ....
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