Keep your fish tank the perfect temperature with this Deltatherm Aquarium Heater from Interpet. This brilliant device would be a reliable addition in any tank, keeping your fish healthy and happy. These heaters are extreme reliable due to their extra thickened safety glass and a plastic end cap for added safety. This heater comes with a two year guarantee for your peace of mind. Ideal for aquarium with the capacity of 40-90 litres (10-20 gallons) and length of 61cm (24 inches).