An air pump in a pond is a valuable tool for keeping your pond clean and habitable. Using an above-ground intake, the pump puts air out through a diffuser at the depths of the pond to create air circulation in the water. This air output helps to reduce the growth of algae that can otherwise overrun a pond. Choosing the right pump for your pond and setting it up for maximum effectiveness are simple matters of making a few measurements.
- Skill level:
- Moderately Easy
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Things you need
- Tape measure
- Rock or brick
- Boat or method of reaching the centre of the pond
- Air pump
- Ventilated weatherproof box
- Power outlet
Measure the surface area of your pond.
Tie a piece of rope around a brick or rock.
Mark on the rope 1 foot from the brick or rock and each additional foot along the rope.
Get in your boat and test the depth of the pond in multiple spots around the pond, noting the depth at the deepest point. If you know the deepest point and have a bridge or other method of reaching this point, you can test the depth at this point from there without a boat.
Multiply the depth of the deepest point in the pond by .4335. This is the pounds per square inch (PSI) that your pump must be rated for.
Choose the appropriate pump for your pond. For a small pond, like a koi pond, use a linear pump. For larger ponds with a depth less than 15 feet, use a rotary vane pump, and for larger ponds use a piston compressor. Your pump also must be rated to meet the PSI calculated.
Place your pump inside the ventilated, weatherproof enclosure near the power source.
Attach one end of the hose to the pump.
Attach the other end of the hose to the diffuser.
Place the diffuser into the pond at its deepest point.
Plug in the pump and turn it on.
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