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Air Pumps Size Calculation Chart

Caution!!!

Many pump manufactures under estimate the size of pump required, so that it appears a cheaper, smaller air pump of theirs will do the job of a larger competitors air pump.

The tables below have been obtained after more than 40 years experience of how much oxygen is required by bacteria and aquatic life under all conditions.

Remember the higher the water temperature the less dissolved oxygen (DO) the water can hold.

Pond Air Pump Sizing

Volume in gallons

1,000

2,000

 3,000

 4,000

 5,000

 6,000

 7,000

 8,000

 9,000

10,000

Volume in litres

4,500

9,000

13,500

18,000

22,500

27,000

31,500

36,000

40,500

45,000

Litres air / min to maintain DO Safe Levels

40

80

120

160

200

240

280

320

360

400

 

Lake Air Pump Sizing

Use 1 hp motor per acre