Having the same problem with my clay pond, so I set my diffuser at the end of a 10 foot rope with a weight to hold it in place to the bottom and a float to keep it right at 10 feet, so far it seems to help. The weight is light enough to hold in place but also to lift when need to do maintenance.
half-acre pond, LMB, HBG, BG, GSH and CC ....goal is to
have fun fishing. And I subscribe!
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