Mike:

What are your O2 readings in ppm or mg/l?

Aeration is a funny thing. It needs to be sized to the pond and to the amount of water that is in the pond. Do you know how many times the aeration system brings the total pond volume of water to the surface?

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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).