So I bought a used 9002 skimmer with the tank I bought and wanted to ask some questions to anyone who has owned or used one. So it has the in tank cup with it so you know. I have connected everything and hooked it up in my 34 gallon solana. Question is 1: Does it take any amount of time to get adjusted to where it will skim usually? 2: How much air should i be letting in. I have the knob turned about halfway open, maybe less. And 3: does the collection cup usually just sit on top or is there supposed to be something kepping it in there? Any help would be nice. Thanks.