AQQA Aquarium Heater 500W Heater for Fish Tank 53-130 Gal PTC Submersible Heater with External Digital Controller Adjustable Temp Range 59-94℉ Over-Temperature Protection (500W for 53-130Gal)

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About This Quality Material: Made Durable Aquarium Heater: This fish tank heater rod is made of ceramics PTC material, features fast thermal conductivity and high heating efficienc y. The shell of the heater and the controller are made of heat-resistant ABS material. Premium material ensures safe heating and long service life Heater Protection System: Build-in anti-dry and over-heating protection system, when the heater rapidly heats beyond the set temperature and reaches over 36℃ (96℉), the LED screen will show EE and keep flashing to remind; When the heater is not fully immerged into water, the LED screen displays Er and keeps flashing. Always provide a safe and comfortable living environment for your fishes Intelligent Heating & Energy-Saving: AQQA fish tank heater adopts automatic constant temperature heating, when the water temperature is lower than the set temperature, it will automatically warm up. When the water temperature reaches the set temperature, the heater will run at low power to maintain the water temperature within 0.5℉ difference from the set temperature; AQQA aquarium heater can reduce your electricity bill by 45% compared with traditional heaters Easy & Safe Operation: You can set the temp with an external controller; Long press the child lock button for 1-3s to enter the temp setting state, then press the temp cycle button, every press to adjust 0.5°F/°C, the available set temp range is 59°F-94°F (15°C-34°C); After stopping operating the controller for 3s, the fish tank heater will automatically enter the child lock state, which prevents children from accidentally touching Kindly Note: Please put the aquarium heater completely into water before plug in, and keep good water circulation in the tank; Please leave the heater cooled down in the water for 15-30 minutes after stop heating to prevent the residual temperature melting shell Show more