If I wanted to grow CC in my pond it would be a strictly catch and remove proposition, then restock when required. CC are so cheap that trying to manage their numbers would be more of a PITA than it's worth.

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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).