A heater that fits all Optima units and maintains a stable working temperature. We use Eheim heaters because they are produced to the highest safety standards, fully immersible, chemical resistant and available worldwide.
Any heaters bought will be pre-fitted by our production team.
All heaters supplied come with a 3 pin UK mains plug. Those in other countries will have to buy an adaptor or buy an eheim heater local to them.
The Optima5 can use a heater but it requires the entire unit to be dropped into a sink or bath of hot water to do so.
The Optima12 and Optima16 can house 1 heater. The Optima20 can house up to 2 heaters.