Helix External Pump - 8200 GPH Ideal for koi ponds, external filters, and low head waterfalls, these durable and efficient pumps utilize continuous duty, weatherproof motors that can be used outdoors without additional protection from weather conditions. Intended for use in flooded suction applications or with check valve on the suction line. Super quiet operation Includes 8 foot power cord and three year manufacturer warranty. Capable of flow rate of 8200 gallons per hour