Water is always the right temperature for plants when gardeners use a Sunleaves Titanium Heater with Digital Thermostat! This heater uses a remote sensor probe to keep constant tabs on water temperature, while the titanium heating element maintains temperatures at a user-defined set point between 68° and 92° F. It shuts off automatically if it's removed from water or gets hotter than 95° F, and also features an overheat alarm. This 300W unit is rated 2.7 amps at 115 volts, and is recommended for use in reservoirs that hold 80 to 100 gallons. Protected by a one-year manufacturer’s warranty.