These aeration kits can be used to increase oxygen levels and circulation in medium to large ponds up to 20,000 gallons. These aerators can also be used to keep a hole open in the ice during winter to allow proper gas exchange.
You can use rainwater to fill your pond, but keep in mind that it is very soft water. If you primarily use rainwater, be sure to check your pH regularly because it could become too low and cause serous problems.
