You can use hydrated or quick lime. Get a pool pH test kit. Put enough in to get the pH to 11 and that should kill the fish. The less water to treat the cheaper it is.


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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).