fresh water skimmer

[Zylumn]

Try adding calcium to fresh water and then try a protein skimmer.
Call me nutz but I have seen whirlpools running with no bubbles then by adding fine calcium the whirlpool begins to lather up. I guess It would be an neat experiment in a empty tank.
Kevin

[fencer]

I have seen in waste water treatment plants use rubber type membranes that diffuse air into the tanks. They generate a fine enough bubble for fractionation purposes.

[albert_dao]

Schuran makes a FW skimmer.

But really, and this is strictly IMO, why would you need a FW skimmer? Are FW tanks not easy to maintain..?

[Big Al's BC]

Large aquaculture systems and ponds benefit greatly from protein skimming, particularly when water changes of a large size are so time consuming. Of course the intent for protein skimming is to improve water quality overall on a constant basis, which any aquatic environment, even a freshwater 10 gallon aquarium would benefit from.

Big Al's BC

[albert_dao]

Which is beyond what I'm trying to say. Would you, personally, spend a couple hundred to a couple thousand extra dollars to keep your 10 gallon tank a little cleaner?