My guppy has pop eye help i cant put salt in the tank i have catfish and...

[C S]

...scaleless fish ? Its like a clear thing and its sticking out of his eye.

[hot RN]

I would use Maracyn and Coppersafe to help your guppy. These medications will not hurt your catfish or scaleless fish either.

[nick 2 dope]

use melafix.it wont hurt the catfish

[nosoop4u246]

Maracyn (One) or EM Tabs are the best choice. They are identical as far as ingredients, the only difference being the makers (Mardel vs. API). Pop eye is almost always gram positive, which the majority of medications will not treat (the two I listed will). Melafix is a preventative, useless for treating set-in infections, especially internal infections like pop eye. Coppersafe is not effective against internal infections either, and will absolutely DESTROY scaleless fish.