well, i have two fish that have/had parasites. i treated them once already last week. they seemed to have been cured of what what wrong with them. i wanted to do another treatment as a preventative measure and add in two fish. i usually add aquarium salt with water changes and when i add fish to a tank. temp is around 82 degrees. the tank is a 135 gallon tank and is home to an oscar and 2 chinese perch. i want to move my flagtail and arowana to the tank as they are out growing their grow out tanks...