Anyone know where I can find a set of instructions for this, I can't get it working well consistently. The air input seems to stop everyday and needs to be adjusted each day, becoming a right pain now. From what I gather the air input valve is the left as the protein skimmer faces outward and on the right is the flow adjuster but I can't confirm this. Everytime I seem to get a nice bubbly overflow, the air input either turns off and the water/bubble level drops under the funnel level or the water level rises above the funnel and fills the overflow cup with just tank water! Getting a bit tedious now!