OK. I know
you can't use a protein skimmer in FW
. But I just made something that does close to the same thing (injects water with air bubbles and collects the foamy stuff that forms) Its been running all day an sofar there is a small ammount of really light gunk that it seems to have pulled out.
Its not just water because its somewhat darker than the water in the tank.
I think I must be missing something, because it shouldnt even kind of work in FW
(from what I've read). Again, its not pulling out really dark stinky gunk like in SW
but it seems to be doing SOMETHING.
Could be a waste of time and not effective, but it was a sunday morning well spent to me