Some Clarification
We did not measure .8PPM and 1.5PPM at the same time. The water seems to stay fully mixed under the ice. When I measured 1.5PPM in December it was top to bottom in ~15' of water. When my buddy measured .8PPM in February it was top to bottom in ~10' of water iirc.
I don't see how there could be O2 exchange going on in the dome under the ice. Wouldn't any O2 trapped under the dome get exchanged out and used up fairly quick??
The prey items in the lake like fatheads survived in there at least a decade before I installed aeration. The scuds have probably been in there for eons. So I definitely don't think the prey is living in the plumes.
