Smart Temp Security Smart Temp Security immediately turns off the heater or cooler if the water temperature is outside 22.2 ℃ and 28.8 ℃. Smart Temp Security uses a miniature sensor to continuously monitor the temperature of the aquarium water. Plug and Play design, it does not require any adjustment.

EHEIM THERMO200 Stainless steel heater - prevents the garden pond from freezing (down to -20°). A garden pond should never freeze over completely. The EHEIM anti-ice heater prevents the pond from freezing completely down to -20°C, allowing fermentation gases to escape. This allows vital gas exchange to take place at the surface of the tank....