Tropical freshwater and marine fish require a stable temperature of around 24-27C. The TetraTec HT range of heaters maintain a constant temperature via an in-built thermostat, making it easy to provide the correct conditions. 

Tropical freshwater and marine fish require a stable temperature of around 24-27°C, in order to remain healthy and in good condition. The TetraTec HT range of heaters maintain a constant temperature via an in-built thermostat, making it easy to provide the correct conditions. Easy-to-set temperature control allows adjustments of 0.5°C, within range of 20°C - 32°C Extra long 2.5m mains cable for easy fitting Safet Shut-Off turns heater off if accidently run dry Can be fully submerged and positioned horizontally Electronic regulator for extra relability and safety Extra thick, heat-resistant borosilicate glass for peace of mind TUV/GS tested - safety and reliability assured Application Simply attach your TetraTec heater to the side of the aquarium, using the enclosed rubber suckers. The heater must be fully submerged. Then set the temperature dial to the desired setting, and turn on the power. The indicator light will illuminate when the heater is in operation. Always read the instructions carefully before use.