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Sea Line Aquarium Heater/Chiller Compact, sleek and easy to install for small aquariums 12000 BTU's 30 degree cooling up to 600 gallons, 10 degree cooling up to 1000 gallons Can heat 15-20 degrees 3/4" hose connections Dimensions : 20" x 15.6" x 18.7" Microcomputer control system Extra large refrigerating capacity Anti-corrosive, pure titanium for freshwater and saltwater use. Compressor protection device system built to shut off the circuit automatically to prevent the motor from burning out when the motor is overheated due to overload. Memory temp system that makes the chiller refrigerate continuously according to the last temp setting.