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 3/4 inch. 120V-60Hz/360 watts/3 amps. Pump Size: Minimum 264 GPH/Maximum 660 GPH. The micro computer with digital LCD display allows for easy operation. Use with a pump filter bag (product #728188 or #728190). Dimensions are 17.13 in W x 11.61 in D x 18.5 in H and weighs 42.5 lb.