PondMaster Air Diffuser


  • Works with 3/4″ or 1″ tubing
  • Diffuser Surface Area: 48 sq. in.
  • Maximum Pressure: 125 psi
  • Minimum Recommended Depth: 6″


The Pondmaster Ring Air Diffuser connects to a pond air pump to inject additional oxygen into your pond. This air diffuser works with 3/4″ or 1″ tubing.
This air diffuser ring has 48 square inches of porous surface area but takes up very little space.
Maintain the diffuser on the bottom of the pond by filling the supplied nylon bag with stones or gravel.

In Summer: The Diffuser will work best when placed at the center in the deepest part of the pond in summer. The rising bubbles will lift and aerate bottom water, allowing oxygen to penetrate sediments and optimize waste decomposition. This will maintain a constant flow of gases up while oxygenated water flows down (after meeting the surface). The Ring Diffuser diffuses one cubic foot per minute at 8 feet of depth and will effectively aerate up to a 50 foot diameter pond; the shallower the pond, the less diameter can be circulated effectively.
In Winter: Your Diffuser is ideal for keeping a hole open in ice during winter, but the Diffuser should not be placed in deep water. Rather, place the Diffuser in weighted Ballast Bag in no more than 16 inches of water at perimeter of pond farthest from deep end or deepest pocket. This will ensure that the circulation from the Diffuser will not supercool the water, which is warmest in the deepest part of the pond.


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