Helix Leaf Trap 2"Ideal use with the Helix external pumps, 3600 8200 Best with koi ponds, external filters and low head waterfalls, these reliable pumps are a great value. Continuous duty, weatherproof motors can be used outdoors without additional protection from weather Super quiet operation Not self priming use in flooded suction applications or with check valve on suction line to maintain prime Call 909 794 5217 for more questions