I wrote you on your IG btw, don’t know if you’re able to see it. And honestly I didn’t took it apart it was just the cup but I removed the whole body from the tank and after that is hasn’t function properly. At night it kinda produces the skimming, but not enough to be constantly but slowly. No matter how bough or low at night. And during the day it just boils and swing side to side like waves It should be like this…
Not like this…
The pump hole should be opposite the holes in the round piece. Although sometimes I get that boiling when the skimmer turns back on from the tank being in feed mode but then it stop after about a minute. Sounds like you’re not getting the fine micro bubbles. Maybe air isn’t being pulled in properly.