fishkeeper 25W/50W/100W/200W/300W Fish Tank Heater for 1-80 Gallon, Adjustable Submersible Aquarium Heater with LED Digital Display and Overheat Protection for Saltwater & Freshwater Tanks

Product description

1 UltraFast Heating

2 Precise Temp Control

3 Anti-scald Shell

LED Digital Display

Easy to observe temp in real-time.Ensure heater is completely immersed in water before powering on.Red light on means the heater is heating. External Hand Controller

Simple temperature setting without wetting your hands.Press to set temperature in 1℉ increments within 59℉ – 95℉. Strong Suction Cups

Allows heater to be securely placed anywhere in the aquarium.The suction cups should be used after being completely immersed in water. Enhanced Safety Plug

Input Voltage: AC 100-120V /60HzSafe standard: UL ListedCable Length: 9.84FT

1 Fully Submerged Setup

2 Avoid Partial Submersion

3 Unplug for Water Changes

Can the heating rod be exposed to the water?

✘ No. The aquarium heater should be completely submerged in the water to use. Please add water regularly!

✘ Do not bury it under gravel as gravel does not conduct heat.

Is there a power-off memory function?

The heater needs to be reset temperature after power failure. But if you don’t set it, don’t worry, it will automatically heat to the preset temperature of 77℉ and keep constant in 77℉, protecting your aquatic pets in a comfortable temperature.

Why is the water barely heated up or overheated?

1.The volume of your tank is large than the compatible fish tank of your chosen wattage. Please choose the right wattage before ordering.

2.The fish tank without lid would speed up heat dissipation, so that the water would be barely heated up.

What to do if the water temperature cannot be stabilized at the set temperature?

1.The water temperature cannot be stabilized at the set temperature is because the wattage is not enough for your fish tank.

2.Add one more heater would improve heating efficiency.

Why is the temperature inaccurate?

Add water circulation to improve heat dissipation efficiency to the water at the far end. For even distribution and accurate temperature control, please place heater near the filter or pump outlet with good water circulation.

Product Dimensions ‏ : ‎ 11.97 x 11.14 x 1.3 inches; 14.4 ounces
Item model number ‏ : ‎ FK077-200W
Date First Available ‏ : ‎ August 28, 2025
Manufacturer ‏ : ‎ fishkeeper
ASIN ‏ : ‎ B0FFSQHRYW
Best Sellers Rank: #163,851 in Pet Supplies (See Top 100 in Pet Supplies) #302 in Aquarium Heaters
Customer Reviews: 1.0 1.0 out of 5 stars (1) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
▚🐠【200W Submersible Aquarium Heater】 The aquarium water heater must be 100% submerged in water use. Ideal for 26 ~ 53 gallon betta, turtle, freshwater and saltwater tanks. Body length: 11.97 inch; Voltage: AC110-120V; Power cord: 9.84FT. Please choose the right wattage heater for fish tank according to our size chart.
▚🐠【Fast Heating & Explosion Proof】The submersible fish tank heater is made of premium explosion-proof quartz glass and nickel-chromium heating wire, which is ultra-fast heat conduction, safer, more stable, energy-saving and durable. Built-in high precision chip for high sensitivity and accurate temperature control within ±1°F.
▚🐠【LED Digital Display & Temperature Control】59℉ ~ 95℉ Temperature range adjustable, display Fahrenheit °F, LED digital display to observe temperature in real time. Easy operation, simply set the temperature you want, the fish heater will automatically start heating, and automatically stop when the set water temperature is reached.
▚🐠【Power Failure & Overheat Protection】If you fail to reset the heating temperature in time after the power is restored, don’t worry The default preset temperature of this heater is 77℉, it will automatically heat to 77℉ and keep constant, protecting your aquatic pets in a comfortable temperature, never “cook” your love fish!
▚🐠【Safe Design & Premium Material】The internal aquarium heater is designed with high-temperature resistant ABS material shell with multi-layer waterproof rubber seals to ensure better sealing and safety performance, prevent fish from being scalded while heating and will not leak electricity or water.