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.
Thermal shatter-resistant glass and dual calibration process make this submersible heater extremely durable and accurate to +/- 1 degree F. Unit switches itself off if the heater is not properly submersed, avoiding overheating and...ONLY$21.29
AQUEON PRO HEATER 100 WATT Pro Heaters are precision calibrated aquarium heaters that are full submersible Power Monitor light (Green – Heating ; Red – Aquarium at set temperature) Shatterproof and Nearly Indestructibl...ONLY$29.25