I don't even know if treating a few miles upstream would be enough. From what I've seen happen to a local lake that was killed, the carp came back and are just as thick as they were before. With the BG/RES/PS/YP/GSH/GS in the lake, I don't think the LMB pay that much attention to the YOY common carp.........

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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).