Here are the specs:
29 gallon cycled tank, about two years old
Panguine 350 HOB filter
2 comet goldfish, three live anubias, lt gravel substrate
Nitrate: 90ppm - working on lowering it (got sick and missed several water changes)
Twice-weekly 5 gallon water changes
Temp 78 degrees
I feed them Aqueon Color-enhancing granuals once a day (they got overfed when I got sick, but that's now corrected)
Small goldie (4" nose to base of tail) is fine, but large one (6") started slowly swelling 2 months ago. At first, I thougt he was just growing, but then one side got larger than the other. 2 days ago, just behind the gill on the swollen side another bump appeared with separated scales, like dropsy. Also, his bottom lip turned purple. He's still active, but possibly slowing down a little.
I've been doing extra water changes, extra filter changes, and adding aquarium salt, but nothing's helping. Sorry, I can't get a pic - he's very active!
Should I try a salt dip? If so, what's the best way to do it?