Amazon.com: Interpet Deltatherm Aquarium Heater - 25 W : Pet Supplies
Amazon.com: Interpet Deltatherm Aquarium Heater - 200 W : Pet Supplies
Interpet Deltatherm Aquarium Fish Tank Heater, adjustable, for Tropical and Marine, 25 W, for aquariums up to 30 litres,Black : Amazon.co.uk: Pet Supplies
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