Got 'er did. It's been running for a couple days now, no leaks, drips, nor anything happening that I don't want.

Going to have to get it in the grow room for a night and see what temp the water gets and stays at before going any further.

Not much sense in going all out till I know what all is going on. And a solution on the wrong side of warm, that would inhibit good levels of O2, is a thing I'd rather not be troubled with. Room temperature is doable...but risky if for some reason things warm up a by just a few degrees.

I've a few ideas on that. By tomorrow morning I'll know the success or failure of at least one notion.