You could always take some of the muck, dry it and send it out to be analyzed for nutrients and pH like the farmers to for their fields. That way you can tell the people that are buying it that it was tested and to get it perfect they need to add "X".

Might be a great selling tool.

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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).