The EcoPlus Chillers are suitable for use in reservoirs, hydroponic systems and fresh or saltwater aquariums. Each chiller provides a high performance titanium heat exchanger for optimum performance and corrosion resistance. High quality made compressor is extremely efficient and reliable. The micro computer with digital LCD display allows for easy operation. Fittings are 1/2 inch. 120V-60Hz/264 watts/2.2 amps. Pump Size: Minimum 66 GPH/Maximum 317 GPH. The micro computer with digital LCD display allows for easy operation. Use with a pump filter bag (product #728188 or #728190). Dimensions are 15.75 in W x 8.58 in D x 16.34 in H and weighs 28.7 lb.