"I have seen ich on a fish two hours after getting him home so your LFS
person is not being too truthful."
I wouldn't be surprised, he is a nice guy, but he has money at stake here, so he may lie to prevent having to give me my money back. 24 hours later the puffer is behaving perfectly normal, eats like a horse, and is constantly scavenging the live rock, would a sick fish do this? My goldfish that had ich, sat on the bottom and did not swim much after the first few spots appeared.
Also, since puffers do not have scales, you can not use copper based cures correct? Sadly, I do not have a hospital tank cycled or ready to move him to, so I am kind of stuck. I have an extra 10 gallon with all of the accessories that could become one, but it would take weeks to get it cycled and ready to use.
I am hoping that by reducing his stress, that his own immune system can beat the ich (if it is ich).