Interesting. I'm assuming that the lower the number, the clearer the water is. Are the NTU values linear? i.e. if 22.5 NTU's = 40 cm, 22.7 NTU's = how many CM? Thanks for taking the time.

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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).