Well, this is my conclusion on the Odyssea PS160 protein skimmer. WHAT a piece os S**t. Djnzlab1 was right on the money. How could you buy something that doesnt come with instructions? Especially when you didnt go to protein skimmer university!!! After playing around with all different parts to see which one was it, copied my present skimmer's set up, I followed the pic that OGW sent me and as Djnzlab1 stated, it kept on overflowing. Bottom line, you get what you pay for. Hey OGW, spend the extra $$$ and get a good skimmer, I did!