Subsurface aerators, or diffused aeration systems, are designed as an alternative source of aeration taking oxygen to a pond’s lowest depth along the bottom. Diffused air systems utilize an air compressor, located on the shore, that delivers oxygen through a hose to a special diffuser lying on the pond bottom.  Air-O-Lator subsurface aerators can be used in conjunction with the Aquarian or FontN-Aire product lines.


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The Deep-Aire is a subsurface aeration system with a piston type air compressor, PVC air hose and an air diffuser. Designed to improve oxygen levels and destratification in deep bodies of water.

The shore mounted rocking piston compressor produces compressed air through a PVC air tube to a membrane diffuser located on the bottom of the pond. The compressed air is released into the water through the membrane diffuser releasing thousands of fine bubbles, which rise to the surface. As the bubbles of air rise, oxygen is transferred into the water. Simultaneously, as the bubbles rise, water is pulled upward, creating a flow of water from the bottom of the pond to the surface.

When selecting a subsurface aeration system, consider the shape, surface area, and depth of the pond. The amount of surface area the Deep Aire diffused system will effectively cover is dependent on the depth of the shape of the pond. The area of coverage increases the deeper the diffuser is located in the water.

The shape of a pond also affects the number of diffusers needed. An irregular shaped pond, (i.e. kidney shaped), rectangular, or one with an island or peninsula, will require multiple diffusers to adequately disperse the oxygen.

    • No electricity required at the water’s edge. Your compressor needs electricity, but the compressor can be located wherever you desire.
    • No floating object on the water surface enabling you to go boating or fishing
    • Lower maintenance and service costs due to no moving parts in the water
    • Safer swimming. The Deep Aire system does not require electricity to be in the pond.
    • Eliminates thermal stratification, making it ideal for deep-water applications
    • One compressor aerates one long, narrow pond, or two small ponds
    • Improves water quality and clarity
    • Low operating cost