I haven't been running the diffuser because I wanted to keep the lower water cold. The trout haven't been seen near the well water going into the pond, so hopefully they still have enough O2 down deep. I cut the duck off the Duckmaster 1100 so it'd sink - I'll get temps tomorrow.

Pond has dropped 13" even with running the well into it over the past 3 weeks.

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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).