Aqueon Pro 300 Submersible Aquarium Fish Tank Heater, 300 Watts, For Up To 100 Gallon Fish Tanks;

Aqueon Pro aquarium heaters are built with a durable, non-corrosive shell for strength and even heat distribution. Each unit is equipped with electronic thermostats for accurate temperature settings and advanced gravity shutoff feature safety. The temperature settings are adjustable, LED power indicator illuminates Red when the unit is actively heating. This 300W Pro heater is for use in aquariums up to 100G and can be used for freshwater or saltwater aquarium; and can be positioned horizontally or vertically. Other wattage heaters are also available, 50W, 150W, 200W and 300W.