[Protective Guard] Made of high quality quartz glass, waterproof double seal material, covered with protective case, shatter-resistant construction, this fish tank heater keep your fish from scalding and punching.
I’ve had this heater for the past few days, and it keeps the temperature in my tank very consistent! Just set your desired temperature and you’re good to go! Very simple operation and the automatic temperature regulation kicks in as soon as the temperature in the tank drops a degree. Very impressed!