I have a 120 and sits in about 4 inches of water I only had a problem with micro bubble the first week it ran. I don't have baffles or anything else for that matter to disipate them. I would contact aquac through there web site proteinskimmer.com they have awsome customer support. You could also try to face the output of the
skimmer towards your
sump wall if all else fails, but you should not get any micro bubbles from this
skimmer. Pham411 could also be right, it could have something to do with your water. You should not exceed the output on your
skimmer so 9 inches is way to much for the new Aquac ev models, it states that in the owners manual.
