I've never heard of that being done before. I have no idea what effect that would have on the diffusers, and the other concern would that the algaecide would not be distributed equally in the shallow areas where it is needed the most.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).