HeatWave Hydroponic Reservoir Heaters 

The stainless steel HeatWave Hydroponic Reservoir Heater helps you maintain ideal nutrient solution temperatures. 

The HeatWave reservoir heater can maintain a consistant liquid temperature between 68 and 93 degrees F - the included temperature indicator is easy to read.

Each HeatWave includes three suction cup mounts - two for the heating element and one for the remote temperature sensor. The stainless steel heating element is completely submersible and is designed for extended use.

The HeatWave Hydroponic Reservoir includes:

Calibrated external temperature control dial
On/off indicator light
Remote temperature sensor
Mounting hardware
Sunleaves one-year warranty

For 40 - 50 gallon reservoirs, use the 200 watt version. 50 to 65 gallon reservoir, use the 300 watt heater.

More info from the Manufacturer (PDF format - Lots of detail.)