If they are eating pellets, and you can stand by the feeder while they do so, then they would be relatively easy to remove. Find someone that bowfishes and they could remove the ones that are eating pellets. It might only be one a day or one per feedind session, but it can be done.

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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).