Theo is the most innovative fully submersible aquarium heater. Shatterproof thanks to the float glass and with high thermal resistance, it is extremely safe thanks to the innovative PTC system developed by Hydor. The PTC technology solves the problems of traditional metal resistance which affect other common heaters. With the aim of creating preventing overheating and breakage, Hydor created the self-protection PTC heating system, which controls the temperature of the heater in case of abnormal operation.A knob with a graduated scale allows you to adjust the thermostat to the desired temperature, maintaining it precisely. supplied complete with suction cups for both horizontal and vertical positioning It is also ideal for turtle tanks, Theo heaters are available in various models with different power and dimensions. Cleaning tips: periodically clean the glass heating tube to remove limestone deposits. Size: 17.8cm H x 3cm W x 3cm D
