NEWATT ECO THERM Entirely submersible heating system for aquariums It maintains the correct temperature with high level performance, savings and safety. Especially designed to withstand the tough environment of marine aquariums, the ideal specifications of EcoTherm are also suitable for freshwater. Each component has been designed to provide precise, efficient heating, giving years of reliable service. Fitted with a safe, sensitive thermostat that maintains a constant temperature. Light and balanced with a full set of sturdy brackets and suction cups to secure fixing. The most common temperature for tropical aquariums is between 24 and 26?C (+- 1?C), which matches the setting readout on the cap. Models available: 25 W, 50 W, 100 W, 150 W, 200 W, 300 W