I have seen doming twice on my pond in the last five years while running aeration to open a hole in the ice/snow. When it occurs, a hole at the shoreline eventually appears, releasing the pressure, and the dome eases back down. Once the dome "collapses" the diffuser goes ahead and opens the normal hole on location over the diffuser.

Last edited by Bill D.; 01/21/20 05:44 PM.

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