I have the same model, if its the BH-2000, and just installed it a couple weeks ago.
I had microbubbles at first, which worried me, but it didn't even last a day. I had set it up kinda late at night and by the time I got up the next morning, no more bubbles.
Also, mine started producing skimmate rather quickly. I've taken the collection cup out to clean it twice I think. Oh, and boy does that stuff stink!
Overall, I'm very happy with it as it was easy to set-up and has been running great.