This Aquascape winter return deicer keeps a hole open in the ice for proper gas exchange during the winter months. Works with your Aquascape pump in the skimmer all winter long. Threads on to the end of your Aquascape check valve, then returns water directly back into the pond. Designed for ponds using the Aquascape Designs 1500 and 3000 GPH pumps. Very easy to install. Mild winters only Winer Return de-icer does not include pump. Your existing Aquascape Designs pump can be used in most cases. Aquascape Designs Winter Return De-icer ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!