IMO you should not have a problem. Moisture in air lines is a concern during winter aeration when there might be possible ice build up blocking the flow. Cover the end of the hoses though to prevent contamination. The diffusers should have a check valve preventing pond water from entering the hose. In the spring, the compressor will blow out any moisture that may have collected.

Last edited by Bill D.; 12/18/15 08:36 PM.
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