Make a note (even if just to yourself) of what time you take the water sample from the pond to send off. pH is highest mid day, and lowest early and late.

A pH of 8.5 first thing in the morning would be something to be concerned about but not a big deal if taken mid-day.

It'll be interesting to see what TAMU has to say vs. the home test kit.

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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).