Tetra Pond Air Pump KitThe Tetra Pond APK100 air pump kit provides vital oxygen to your pond fish and turtles. Use as a winter survival solution to help maintain clear water by promoting the breakdown of toxic substances. Provides vital oxygen to keep pond water aerated Maintains an opening in ice as a winter survival solution for fish and plants Helps maintain clear water by promoting breakdown of toxic substances The Tetra Air Pump also maintains an opening in the ice for