wrote in message
...
not really. what actually happens is the medication is incorrect for the
problem.
nearly all the time problems with fish start with a parasite that is large
enough to
breach the slime coat. then the bacteria are able to attack, and third is
fungi.
snip

What I meant was, I wonder if the fish death is related to a disease and not
to being poisoned by an overdose. IE, his "friend" didn't kill his fish, he
just didn't heal them.

BV.