yeah agreed, interesting experimenting regardless. and I agree with the treatment approach to limit use of antibiotics and just provide a good water balance and environment for the fishes. Of course antibiotics work but for what reason would you use them? Presumably the fish just had ich, and I don't see any reason to liberally use antibiotics on fish with little chance to survive anyway. And there is no need to sterilize after drying out; sure some bacteria may survive but unless your fish is immunocompromised it won't do anything.
Now of course if it was your 20 year old goldfish with a suspected bacterial infection, then pour in all the tetracycline you want. But I think people have to learn how to responsibly use antibiotics as well, and that the maintenance of the fish's health is of paramount importance.
please keep us updated and I hope you are successful!