I have a 40g tank, and I bought a 65g skimmer. Super skimmer from coralife with the needle wheel. I set it up 2 days ago, but I don't notice any change, it doesn't create any microbubbles, or foam. It seems as if the water is just stuck there. I need info on "how is it supposed to work". The collection cup cone has water to the middle. The bubble production diffuser blows a bit of big bubbles but they inmidiatly float to surface. the skimmer has a 650- 750 gph
pump. How much water should I have on my collection cup cone? And last, how is the flow control valve supposed to work? I noticed when is take it out, a lot of bubbles are created but when is fasten, no bubbles at all, and I can't have it on medium since it gets pushed out by the water.