Kru, I think doing that sort of test with the plant is a very good idea. Just be very precise in the measurements of lime to water in the test. A slight bit off in the test might mean a big difference in the pond water when it comes time to do the whole pond if it works.

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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).