Aquatop Aquarium Submersible Glass Heater

Keep your aquatic creatures happy, healthy and comfortable with the Aquatop Submersible Glass Aquarium Heater. This heater features suction cups for easy installation and a very visible temperature setting. 50-watt heater maintains constant, stable aquarium temperatures Simple to set and adjust temperature High quality, insulated glass construction Specifications: 50 Watt: 9" (Aquariums up to 13 Gallons) 75 Watt: 9" (Aquariums up to 20 Gallons) 100 Watt: 10.5" (Aquariums up to 25 Gallons) 200 Watt: 12.5" (Aquariums up to 50 Gallons) 250 Watt: 12.5" (Aquariums up to 65 Gallons) 300 Watt: 14.5" (Aquariums up to 75 Gallons)