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The air diffuser platform allows you to mount air diffuser(s) firmly at the bottom of the pond and keeps the air diffusers up out of the mud. The air diffuser platform has a hollow base that can be filled with sand or gravel. Choose the number of disc diffusers your installation needs. Precision perforated I-shaped slits open when airflow is present and close when airflow is stopped, which increases durability and longevity, as well as cleanliness. These diffusers offer the lowest back pressure in the market, adding less than 6 inches of water depth backpressure, allowing you to utilize your air pump more efficiently. All models come with a single 3/4" PT female threaded outlet connection. A Quick uni-pack available to easy connect 2 air diffuser platforms together with only one 3/4" PT threaded outlet connector; double the aeration performance without extra air pump or air tubing!