Amazon.com: Aquael Ultra Aquarium Heater - for Freshwater and Saltwater Aquariums (150 Watt / 24-40 Gallons) : Pet Supplies
Amazon.com : Orlushy Submersible Aquarium Heater,150W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater : Pet Supplies