Freshwater skimming possible?
I just had a quick question that no one on the internet seems to be able to answer concisely -- namely, can you use a protein skimmer in a freshwater tank?
Some websites say "yes, but its tricky.", and no further information. Other sites says "no, the specific gravity is too low."
I gather that skimming freshwater isn't going to be done by conventional means, so I want to know if its possible, and if so, how do you do it? with what equipment? etc.
I'd really appreciate the input. Thanks!