Koi Loving Care for your pond. Four new koi pond and water garden aeration kit options will ensure adequate oxygen levels and circulation during summer months as well as de-icing capability during the winter. These four kits feature the new Stratus KLC energy efficient, linear diaphragm compressors and are available for ponds from 1,000 to 30,000 gallons. Stratus KLC Compressor Kits Feature: Ensure adequate oxygen levels and circulation during hot summer months and deicing capability during freezing months. Kits available for wide range of water garden and koi ponds up to 30,000 gallons Quiet, energy efficient compressors with CUL and UL listing for outdoor use 3 year warranty All kits include compressor with 6' power cord, 8" rubber membrane diffuser(s), connectors and 3/8" QuickSink tubing