I put the Octopus HB800s on my 58 gallon reef tank three weeks ago. I should be past the break-in period but I can't seem to get it to work properly. I have to keep the collection cup positioned quite high, and even with it set at this level, it overskims when I add anything to the tank. If I add top off water, bubbles rise and quickly overflow the neck and fill the cup. Same thing if I add calcium. So--I am collecting a lot of very watery skimmate but have yet to get a cup of nice dark skimmate. The funny thing is that I replaced a Coralife 65, which most people had unkind words for--but it seemed like I was getting better results. Anyone have any suggestions?