Atlantic Water Gardens Typhoon Air Pumps feature weatherproof, continuous-duty diaphragm compressors specifically designed for year-round usage. Ideal for aeration and circulation in warm weather, these aerators are especially dependable for de-icing and gas exchange in freezing weather, unlike floating de-icers that often fail under harsh conditions.  With diffuser options for ponds from 1,000 to 12,000 gallons, Typhoon Air Pumps adapt to most backyard ponds. Best of all Typhoon Air Pumps are easily rebuildable and exceptionally efficient!