Pop-eye and other problems? Help!

[dhawkercp]

So overnight one of my gouramis got popeye. I didn't have enough time to go buy meds for it and lost it. I changed a lot of the water and in the process I think scare another one of my gouramis to death, literally. Now my last gourami has popeye, I have been treating with Maracyn 2 for the last two days (adding the meds after a daily 20% water change). His popeye isn't going away, although I know he may have it forever due to stretching, but now I am noticing little things growing on the inside of the glass. They look like little tufts of cotton hanging on by a single point. Are these related to my gouramie woes or something different and can anyone help me id these pests .

Tank Specs: 29 Gal, 1 (sick) gourami, four mollies, all chem tests in ideal range, well planted (with new bulbs sprouting).

[Zagz]

Specific parameters would be helpful. Popeye is not an disease itself rather and symptom of other problems. Treating popeye is best done with regular water changes and some melafix IMO. I had a fish have it's eye bitten off and pristine water changes and melafix and the fish was good in a week.

How long has your tank been set up? Do you have any snails?

[dhawkercp]

Well the gourami didn't make it, but I am continuing the maracyn for a few more days just in case for my other fish even though they seem healthy and lively. I didn't get a chance to test the water this morning before heading off to work but I will let you know specific levels when i get home. I have had the tank about 3 months now (but I have been keeping fish for about 3 years now). I started with a handful of cichlids but what I though were females turned out to be males so I had to donate them to a local store before they got too aggressive with each other. I did see snails in the tank after I purchased my driftwood from my local store but I think the cichlids took care of them. I did see a new snail the other day, but now I can't find it. Will this cause those weird things on the glass?