I can't believe how often I overlook the obvious.
I have a low pressure pump with venturi, replacing air stones/pump, in the F & D rez of the plant I am beginning to harvest as I type. I had to put that pump on a deep cycle timer as running it 24/7 heated the rez > 80*s, no bueno!
Fast Forward to this morning...
I was responding to a DWC thread, providing a brief description about my dwc system for seedlings/clones, and how to use flooming/venturi instead of air pump/stones and that that pump needs to be on a separate deep cycle timer to eliminate heat build up,
Two days ago I noticed that the nutes in my dwc tote upstairs were pretty warm, and as of yesterday I was siphoning them out into a bucket with blue ice paks to cool down. And I had just done it this morning, prior to responding to his thread when it hit me between the eyes-- BAM.
DOH, I neglected to power that pump through my deep cycle timer.
Correction made lol
FYI, I took 2 cuttings from Big Girl