Protein skimmer question

[EGMono]

I'm still new at aquatics and although I've been reading a great deal, and
learning quite a bit, I have a million questions...like this one.

I understand (basically) how a protein skimmer works. The bubbles coming up
make contact with water coming down and carries proteins out into a collection
cup. Correct?

Does it only work with sal****er tanks? Why?

TIA,
--
E.G.Mono

[Geezer From Freezer]

post this on rec.aquaria.freshwater.goldfish or
rec.aquaria.freshwater.misc - you'll get more replies than
on this newsgroup

EGMono wrote:
>
> I'm still new at aquatics and although I've been reading a great deal, and
> learning quite a bit, I have a million questions...like this one.
>
> I understand (basically) how a protein skimmer works. The bubbles coming up
> make contact with water coming down and carries proteins out into a collection
> cup. Correct?
>
> Does it only work with sal****er tanks? Why?
>
> TIA,
> --
> E.G.Mono
>