OB…you are the ultimate go-to as usual.I know before I upgraded mine to DC when I first started my tank it went crazy. You can let it just drain from the hose back into your reef mat or sump till it breaks in. Is your water level even with the sticker on the skimmer? It probably won’t produce much till you get a bio load but running it will help your PH. I’m personally not a fan of these Red Sea skimmers. I feel they don’t work all that well. I wish I would have bought a different skimmer.
I wasn’t aware of this baffle (1:29 mark of video) to adjust the water height in the skimmer section, which you were spot-on with, in that the water level was too high causing the over-skimming. Now just have to fine tune it as it appears to be working perfectly now.