We use it too and we are very happy with it. But, most importantly our inhabitants are really happy. We are able to support everything from clams, to corals, to anenomes and fish. The only thing we ever had an issue with was ajusting the skimmer because we used to have a lot of tiny bubbles. But once you figure it out, everything is great. Our reading are always good. However, we do frequent water changes. The instructions tell you 10% a month. We do 10% a week.