Aquarium HeatersA quality heater is necessary if you intend to maintain a successful tropical freshwater, marine fish or reef system. Temperature fluctuations often go unnoticed by aquarists and can cause stress to fish and corals. Most heaters include a built-in thermostat to select the optimal temperature for your aquarium.
Buy One Cobalt Aquatics Accu-Therm 250 Watt Aquarium Heater and Get One Pro Breeder Flake Food - 3 oz. FREE$42.65