Did I do the right thing?Help,please!

[amandalh76]

I recently starting trying to get a mate for my clownfish. I got two from the same pet store at different times, each died within 3 days. My water is o.k., so I just thought the clowns came from a bad place, my clownfish has stopped eating since each of his "friends" death. Tonight I went and got him one from a different place, better, just more expensive, and as soon as I put him in, after floating for 20 minutes, my clown came out, that's when I noticed a sore on his side, I've seen this before in pet stores and I know that the fish usually die, I have a small QT. He was also a little jerky, anyway, I treated the water with greenx and the salinity is a little low, I panicked, did I do the right thing, he seems to not be jerky now, and has slowed down a bit, he seems better after just 30 minutes. Please help me.

 

[elfdoctors]

Welcome to the Boards!
Did the first two fish have any symptoms (spots, white patches, fighting, labored breathing) before they died?
Which fish has the sore, the old one or the new one? Your post is unclear.
Did you acclimate your fish longer then 20 minutes? This site recommends 2+ hours for clownfish. A too rapid acclimation, particularly if there are big differences in salinity, may have caused trouble with all your fish. As the new fish adjusts to the lower salinity it may be improving.
What are the exact numbers for your readings, especially the salinity?
A lower salinity will actually help open sores. The greenex probably didn't hurt anything but is not recommended to be used in a display tank. It is best used in a hospital tank. However, it probably doesn't do much for open sores.

 

[amandalh76]

the "old" fish is the sick fish. I have him in a tank by himself, the salinity of the tank he came from is 21 the QT is at about 17. This morning the new fish in the established tank looks o.k., my old fish is in QT and he seems o.k. also, I'm just going to watch that sore.
The first two fish that died came from the same "batch" they just had a sluggish behavior after about 48 hours. My nitrate and ammonia is 0.