The Blagdon Pond Oxygenator Kit - Standard Pond is a high output air pump designed for ponds up to 2000 litres. This weatherproof water garden air pump increases oxygen in the summer months and helps prevent pond freezing during the winter. It also aids in circulating your pond. Fish and pond life require oxygen-rich water to remain strong and healthy, and beneficial bacteria in filtration systems need oxygen to flourish and keep your pond free from toxic waste. Aeration is crucial in warmer months when water holds less oxygen, as oxygenating plants use oxygen at night. This kit comes complete with an air stone and airline and includes a 3-year warranty.