Fluval Aquarium Heater T300 Fully Electronic for Freshwater Aquariums up to 80 Gal Clear

300-Watt heater designed for freshwater aquariums up to 80 Gal (300 L) with advanced electronic construction provides superior accuracy, stability and long-term performance 24/7 monitoring regulates temperature and avoids large, unsafe fluctuations and 360° indicator light ring displays heat mode clearly from any angle (illuminates RED when heating function is engaged and BLUE when desired temperature is achieved) In absence of water, the T-Heater automatically cuts power to prevent overheating and Heater Guard provides additional protection against breakage Large grip dial easily adjusts water temperature from 72-90˚F / 22-32˚C Fully submersible design allows for placement anywhere in aquarium either vertically or horizontally