I just bought a CSS 125 used and although it looks fairly new and at the moment it isskimming like crazy, however I had to hook an air pump up to the air supply line to get it to produce bubbles. without the air pump it wasn't producing any bubbles. I'm thinking the pump may have been changed to a NON needlewheel pump, I will check later but was wondering if any of you CSS users had any other ideas why it wasn't producin bubbles?


Thanks


Rob