i just received my cpr bak pak2 with a maxi jet 1200 and this is the first time i have ever set up a skimmer...can u guys tell me how high to set up the collection cup (nothing is going in the cup) also can u tell me the proper adjustment of the bubble valve...and should i or should i not remove my bio media...i have it in the tank running but i know i dont have it tuned right at all...also getting alot of noise right now...maybe just need to break in