CJ, how fast will the well water absorb O2 from the air? If the water isn't bounced around before it enters the pond will low O2 and the other gasses that are in the well water affect the water quality in the pond?

It'd help to know the size of the existing pond, and the GPH of the well water going into the pond.

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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).