Treating your tropical or marine fish to one of these heaters means the lucky things get to take advantage of their in-depth aquarium heater experience and knowledge. You get to relax at the thought of the 2-year guarantee and excellent safety credentials. These heaters are super-reliable, and thanks to the extra-thick safety glass and plastic end cap, are also extra safe. The positive click-control makes its easy to adjust the temperature precisely, but as the heater is already set to 24C you might not find you need to. 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.