The all new Cobalt Aquatics NEO-Therm fully submersible electronic heaters feature a modern, super flat design with an easy to set “one touch” control system. The advanced electronic thermostat is accurate to ±0.5ºF and includes a LED that displays both the Set Temp and Tank Temp simultaneously and has a Set temperature range from 66ºFup to 96ºF. For ultimate safety and reliability, integrated thermal protection circuitry shut the heater down before it can overheat and its shatterproof outer casing make the NEO-therms virtually indestructible. Perfect for freshwater and saltwater aquariums and terrariums. Available in 25- 200watt sizes.