JBL Protemp S, 50 WHeating for aquariums, 50W safety heater stat with protective basket. Key Features: Heating for an ideal temperature in aquariums with 30 80L content (40 80cm length). Easy to install: insert the heater into the protective basket, preselect the temperature on the dial, immerse in the aquarium, attach with suction cups to the internal aquarium pane. Precise temperature setting: dial covers temperature range 20 34C, control accuracy + 0. 5C. Ideal