Neon Tetras have spots

Looking at my tank, and my previous posts, I know what happened. I had a temperature crash (got down to about 69 F) that killed two tetras and left the third sick. I could tell that the last tetra wouldn't make it so I didn't think to start a treatment or even identify what it was. I exchanged the fish with Petco's 15 day exchange policy, and lo and behold the new fish got sick (makes sense now that I understand Ich and how it progresses). That's when I made this post.


I went with the medication because it is all natural and I read no warnings about using it with tetras. I have been using 150% dosage and all of the fish are looking great. I still do not really understand the salt treatment. I'm not arguing its effectiveness, I just felt more comfortable using a treatment that I understood. Plus I needed to do something right away, so I didn't have time to do more research about it. Maybe in the future I'll try that one.

The real lesson that I learned is to identify and treat any infection or abnormality with my fish. Even if it won't save the infected fish, it might prevent a recurring problem.
 
The saga continues...
They were finally spot free as of Wednesday, and I was really looking forward to getting things back to normal. I kept up the treatment (like you're supposed to) at full dosage, although I did lower the water temp from 84 to 82. On Sunday morning, one of them had a new spot on his lip, and this morning the other one had a new one. It's weird that they are nearly mirror images of each other now. I've been checking the water nearly every day; ammonia has been 0, nitrite 0, and nitrate <20. Is this unusual? I have been treating for nearly two weeks now. So very frustrating.

Another though I had: how about making a sticky about Ich since there always seems to be at least three threads about it at any time.
 
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