I have a newly set up 190L corner tank with LR and 2 clowns. Everything seems to be going well so far except that my prizm skimmer isn't skimming It's flowing and bubbling but nothing is spilling into the waste chamber. If I turn up the flow, the bubbles do rise as high as the chanber but I then get a haze of 'microbubbles' in my tank. Any ideas what's going on? It's been in operation about a week.