The AquaC Remora requires no adjustments. Just set the collection cup to your liking, and plug it in.
You are correct in not using the air intake on the PH
. It's not required.
It took mine 3-4 days to produce skim, and about 2 weeks for the micobubbles to disappear. It's now in my sump so I don't care about the bubbles, but be patient with it for a couple weeks.