what are you treating WITH?
if there is a fungus, dose the tank with melafix.
also, don't dose a hundred different types of medication at once, and WATCH your water specs.. a lot of medications (antibacterial specifically) will wreak HAVOC on your biological filter.. just as the fish is getting better, it dies... only for you to find out it was from the ammonia spike because the medication killed the biological filter.
if there is a fungus, dose the tank with melafix.
also, don't dose a hundred different types of medication at once, and WATCH your water specs.. a lot of medications (antibacterial specifically) will wreak HAVOC on your biological filter.. just as the fish is getting better, it dies... only for you to find out it was from the ammonia spike because the medication killed the biological filter.