My experience with the Blue Tilapia is that 17# won't control algae in a 1 ac pond, but when stocked at the rate of 40# per acre, they will. I haven't tried any numbers between those 2.

I'd be looking at stocking fish that were 5" and larger to keep your LMB from eating the stockers.

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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).