I clean out my protien skimmer and place it back on it's base, clean as a whistle (drain tube is clear).
I turn the bubbles to what looks like the tinyest bubbles.
White bubbles start to form and rise up the pipe.
I close the door on the cabinet, and go to work.
When I get home, the collection cup has black (not light brown - black) liquid in it, and seems to have stopped working. No liquid in the over-flow container at all. (I use an old Coka-Cola bottle)
I wait overnight, and check it the next morning. No change. No fluid in the overflow container. I decide to wait till after work on that day.
Look at it again - no change. I clean out the Protien Skimmer, and try again.
Same thing - collects about 1/4 inch of black fluid, and then doesn't seem to collect anymore.
I've checked the drain tube for clogs, but test water flows through it perfectly.
Anyone else have this happen???? Why is the Protien Skimmer removing so much filth?? Should I change the size of the bubbles in the riser tube?
Thanks - and more questions are in the que!