The arcadia chiller range consists of two high performance marine or freshwater aquarium chillers capable of maintaining a stable aquarium temperature in aquariums up to 500l or 2000l in capacity depending on the modelr features incr r titanium exchange for marine aquarium user high efficient cooling systemr digital controller incorporating digital thermostat and thermometerr easy clean air filter 20mm inlet and outlet hose jointsr supply 230v 50hz power 250w 18hp btu 1310 refrigerant cfc fre