j[psdad:

Never tested the water from the tiles. If there is a heavy rain at first it is a bit turbid but then it clears up. Heavy clay soils at the pond area. The pond has a 28' deep hole, and it is aerated. The pond owner isn't worried about the nutrients too much, the pond has been there for a LONG time, but it was completely drained and renovated over a 3 year period before it was restocked. If needed there will be a well in place next year to give the pond a good flushing. Pond has approximately 56 ac/ft water in it.

Yes the mild turnover could bring nutrients to the top where it feeds the phytoplankton that is in the sun, causing them to multiply.

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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).