I have a 30 gallon tank that has been set up for about 5 years now. I've had a small school (7) of white skirt tetras for about 6 months. Recently one of them got bulging eyes, bloated stomach, and eventually pineconing scales-- symptoms of dropsy, I thought. I tried to treat with Melafix and aquarium salt but the fish died. Isn't dropsy usually caused by stress/poor water chemistry? The rest of my fish seem fine but I'm worried that I should be treating for some sort of bacterial problem?
Besides the 6 white skirt tetras, the only other creature in the tank is one ammano shrimp. I got it two weeks ago and was planning on getting several more. Could the shrimp have somehow carried a disease? I got it from my locally owned LFS
, which I trust, and the tank of shrimp and fish looked good when I was back there yesterday.
Tank parameters (using API master kit):
Nitrates:0 (which is also a little weird, I do have live plants and have done several water changes lately, but there is usually at least a little nitrate, where did it go?)
Temp: 74į F
pH: 7.8 (this is also my tap water pH)
Fluval C4 power filter, 264 gph
No new food, decor, filter, etc.
I've done two 25% water changes in the past week, but at this low stocking level I usually only do this every 2 weeks.