These assembly includes 6" air diffusers, a underlay plate (to keep diffuser out of mud) and a check valve to prevent water from backing up into the airline. Standard air hose fitting is 1/2".
4-Stone Diffuser Manifold - Typically used where the depth is less than 8' or in smaller ponds with smaller compressors. It requires 1.5 to 2.4 cfm. S1 underlay (included) prevents sediment erosion and suspension. Outlet 1/2" male barb fitting and 4 ALR23M Sweetwater® diffusers also included.
6-Stone Diffuser Manifold - Usually recommended in 8' to 40' of water and requires 3–7 cfm. S1 underlay (included) prevents sediment erosion and suspension. Outlet 1/2" male barb fitting and 6 ALR23M Sweetwater® diffusers also included.
8-Stone Diffuser Manifold - The MOAD ("Mother of All Diffusers"). Use this for the really deep lakes. Requires 6–10 cfm and it has a 5/8" hose barb inlet. Incldues 8 ALR23M Sweetwater® diffusers.
An auto-fill can help avoid a potential disaster when re-filling your pond. It makes maintaining a pond much easier and with an auto-fill you do not run the risk of forgetting to turn off the water. An auto-fill will automatically keep the pond water at the same level all the time. It is important to note that cheap auto-fills can pose a great threat. Buy a quality auto-fill, not a plastic one.