AquaT 100W Aquarium Heater, Stick Heater, Powerful Performance for 50-100 Liter Aquariums New, unused item in unopened original packaging quaT uses a simple and clear temperature control system. The rotary knob on the top of the heater allows you to set the desired temperature, which is continuously regulated by the thermostat . Thanks to the heater's simple operation , you save time and energy and can be sure of the safety of your aquarium inhabitants. The heater has a unique design with a plastic housing . Safe, compact and fully submersible. For freshwater and saltwater aquariums Simple regulation Easy-to-read temperature display All trademarks, logos, product and company names are subject to the rights of their respective companies and are used only in the product description as part of the product information.