skimmer issues

[fishykisses]

Can anyone help me?
I have the coralife 65 skimmer on my 55g.
I can't figure out how to mount it so it's high enough to function properly. At the moment; in order for it to work properly, the water level has to be so low that it sounds like there's a rushing river going through my room. I thought it was working great but it turns out my water level was too high and it was overflowing. It seemed great - no micro bubbles but it wasn't really doing it's job.
I've been really getting into the habit of regular water changes and such now that my bio load is a little higher. I just can't get it regulated especially with the micro bubbles...it takes 3-4 days for the micro bubbles to go away and then i do a water change 2-3 days later and it's micro bubble city all over again.
Idea's anyone?