🐠 SZELAM Aquarium Heater with Thermostat - 200W, 300W, 500W, 800W Submersible Fish Tank Heater with Overheating Protection. Fast Heating for 26-211 Gallon Betta Fish Tanks Review

【Energy Saving Aquarium Heater.】 This 300w aquarium heater, has fasting heating function, is made of advanced explosion-proof quartz, which features shatterproof and anti-corrosion. It is also comfortable, durable and safe to your aquatic pets. 【Precise Temperature Control.】 SZELAM fish heater has built-in double sensitive temperature probes, making the temperature accuracy within ±1°F, which creates the most comfortable living habitat to your beloved fishes, letting them no longer fear the cold winter. The temp control of the fish tank heater ranges from 57-93°F. 【Overheating Protection.】 For the protection of the fish and your safety, the submersible heater will automatically shuts off when the water temperature exceeds 95°F, with the external controller displays error code "H1". Until the water temp is lower than the setting temp, the heater will restart to heating again. 【Automatically Power-off When Leaving Water.】 Our digital aquarium heater has smart temp and water sensor system. It will automatically stop heating when the heater is not fully submerged in the water or esposed to the air, the error code "E1" will be showed on the LED display. 【Memory Function And Wide Compatibility.】The adjustable aquarium fish heater can automatically retain the previous set temperature when the heater is restarted, no need to set it again. Recommended for using in indoor, the submersible fish heater works for 39-79 gallon tank, perfect for freshwater and saltwater.