🐠 AQQA Submersible Quartz Glass Fish Tank Heater - 100W/200W/300W/500W/800W - Aquarium Heater with Over Temperature Protection & External Temp Controller - Ideal for Freshwater and Saltwater Aquariums Review

🔥SAFE& DURABLE: Made of heat-resistant quartz glass and PC plastic cover, double seal material, providing explosion-proof, shatterproof, IP68 waterproof, much safer for human and your lovely fishes, your pet will no longer fear the winter. 🔥INTELLIGENT AUTOMATIC HEATING: Automatic constant temperature function, design with External Temperature Controller, Temperature Range is 59oF- 93 ° F (15 ° C- 34 ° C), Hold button at the top of the controller down for 5 seconds, switch easily from Celsius to Fahrenheit. It will restart to heating when the water temp is 1°F(1° C ) off the set temp. If power is shut off, the heater will keep the temperature settings until it powers on again. 🔥Digital LED Display: LED display on the middle of the controller front side, Current Temp and Set Temp. If your heater is working properly, the red light will be constant on. When the temperature is reached 93°F(34°C), it will stop work, the blue light will be constant on. When the heater exposed to air and is not fully submerged, then display the blue light and E1 fault. 🔥EASY INSTALLATION: Easy and quick installation, submersible fish tank heater, vertical or horizontal placement using attached adjustable hanging rack and 2 suction cups. NOTE: Please make sure that the heater is completely submerged in the water before turning on the power, and install it near the water flowing area to prevent uneven heating. 🔥WIDE APPLICATION: Suitable for freshwater and saltwater aquariums. NOTE: Before you clean the aquarium or change water, please cut off the heater power, after 10 minute cooling then take out the heater. AQQA provide 12 Month Warranty and 24 Hour Professional After-sales Service. Please don't hesitate to contact us to get help.