Dumb Question.. but hey you never know..

[Matty]

K guys a quick question here for ya.. I did some adjustments and I am now able to hang my skimmer off the back of my tank. It is a Nana Rio. I have not had a skimmer before.. and this one comes with hardly any directions. I have it running.. water is coming in one end and out the other. There is a venturi tube and around it is a bolt I guess you call it.. you need to losen it to move the venturi tube up or down.

My question is this.. do I keep that bolt around the Venturi tight.. or lose. When I losen it.. water bubbles a mist of sorts in the collection cup.. if it is tightend it stops that. The directions don't say anything about it.. just that it can take 24 hours to collect anything.. hope yoou guys might know something!

Matty