10 Best

Submersible Aquarium Heaters

of April 2024

  1. Product Highlights
    • 【safe, fast and precise heating】the internal material of this fish tank heater is explosion-proof insulated quartz tube and nickel-chromium heating wire, which is safer than traditional coil heaters and has better thermal conductivity. the built-in smart thermostat makes the temperature accuracy within ±1℃.
    • 【easy to use and operate】①memory function: each time the heater is powered off and turned on again, the previous temperature setting will be automatically retained. there is no need to repeat the setting every time. ②external controller: it’s easy to adjust the temperature and change units without getting your hands wet. the led digital display shows real-time water tem...
    • 【compact small heater】oval shape design small aquarium heater, fast heater for small aquarium. the power cord is 5.3ft, long enough for indoor use.please choose the right watt aquarium heater according to our size chart
    • 【4 safety protection settings】①automatically stops heating when the set temperature is reached. ② automatically turns off when the heater is exposed to air and when the water temperature exceeds 35℃. ③high quality plastic cover can effectively protect small fishes from getting burned. ④ip68 waterproof,certification plug and power cord make the aquarium heater safe and n...
    • 【suggestions for use】when using, please immerse the aquarium heater completely in the water, but not bury it in the sand. fix it horizontally or vertically with suction cups, and place it where the water flows. we offer a 12-month warranty and professional after-sales service, any questions, please don't hesitate to contact us.
  2. Product Highlights
    • 【automatic constant temperature】the accuracy of the thermostat is 0.5°c, and the built-in chip keeps the fish tank heater at a constant temperature. when the set temperature is reached, the heater will automatically stop heating and cut off the power supply. aquarium heating ensures that the water maintains a constant temperature, keeping your aquatic pets healthy and h...
    • 【memory function】the heater for aquarium fish tank can record and display the temperature in real time, and the last setting is stored in the chip of the thermostat. if there is a power flicker or power outage and the heater is reconnected to the power, it will remember the last temperature setting instead of a random number, which is more convenient to use in your dail...
    • 【small but powerful】klarlight 50w aquarium heater is designed for small aquariums, takes up less space and is fully functional. it is recommended that you turn on the water cycle and clean up more according to the instructions to avoid inaccurate temperature measurement. please use it under the specified voltage conditions, and it is forbidden to reach into the water wi...
    • 【dry run/overheating protection】when the water temp exceeds 36°c/97°f, the tank heater will activate overheating protection, display "h1" and stop heating. when the water level is lower than the minimum water level or leaves the water surface, the heater will activate dry run protection, display show "e1" and stop heating. with full consideration of safety, no more "coo...
    • 【wide application】the submersible aquarium heater is widely used in fresh water and sea water. not only be used as an aquarium heater for tropical fish, neon tetra, guppy, prati, angelfish, goldfish, betta fish, sea turtle, various saltwater fish and freshwater fish, but also can be used for pet drinking water heating, plant hydroponics, and other occasions that require...
  3. Product Highlights
    • 【adjustable water temperature】 simply press the external adjustment button to set the temperature between 18°c-35°c. once the desired temperature is reached, the heater will automatically stop heating. and if the water temperature drops by 1°c, the heater will promptly reheat the water automatically, saving you time and effort.
    • 【auto-off protection】 if the tank heater is not installed properly underwater, or the water level runs low causing the heater to be exposed to the water, it will activate the auto-off function, this safety feature shuts off the heater to prevent dangerous situations. please note that the mini aquarium heater must be completely submerged in water.
    • 【specifications】 small fish tank heater 100 watts for 35-80 litre tanks (instruction specifies 70l capacity, but tests confirm suitability for 35-80l range), ac220-240v, bs plug and 1.2m power cable, includes 3pcs suction cups to securely hold the heater in place. the fish tank heater size is 7.5x11.5x3.3cm, the compact design is not only suitable for fish tanks, but al...
    • 【accurate temperature detection】 built-in accurate temperature sensor, to detect the water temperature and control the heating operation more precisely. and the digital led dispaly is more convenient to read the temperature. when turn on the turtle tank heater, the led will show the real-time temperature, when you press the temperature control button, the led will flash...
    • 【reliable aquarium heater】 made of good quality pc material, which is durable and anti-corossion, makes it an excellent fish tank heater for both fresh water and saltwater, suitable for tropical fish/betta fish/freshwater fish/turtles etc., provides your aquatic pets with a constant and comfortable temperature environment.
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