AQQA Aquarium Heater 500W for 66-135 Gallon Submersible Fish Tank Heater 75 Gallon Betta Fish Heater Aquarium Thermostat Heater for Coral Marine & Freshwater Aquarium (500W, 66-135Gal)
- ...xternal temp controller, press the button for 3 seconds to switch beween ℉ and ℃,and every press to adjust 1 ℉ /℃. Easily adjust the temp without hands getting wet. (Note: the controller is not waterproof).
- 【Heater Protection System】 With anti-dry heating and overheating protection, when the heater is not fully immerged into water, the aquarium heater will stop heating and alert, controller display "E1".
- When the water temperature exceeds 95℉/35℃, the heater will stop heating and alert, controller display "HH". Protecting your fish from over-heat scalding..
- 【Warm Notification】Please note that the aquarium heater must be fully submerged in the water but don't bury it into sand or mud. Please put the heater near the water flowing area to prevent uneven heating and unplug the power supply when cleaning the fish tank or aquarium water changes. Any problems, please feel free to contact us..