I have a Powder Brown in holding tank (cleared PraziPro and Cupramine treatment for 30 days) for observation. It has been 1 month in a 100GL non medicated holding tank along with 10 other fish. The holding tank is fully cycled and has a skimmer, live rocks and a activated carbon filter. The fish has developed bacteria infection with fin rot and has lesion on it's body. It is otherwise active and have great appetite. All other fish seem unaffected. Is it time to pull it out for treatment? Also I do not have another treatment tank with cycled biological filter, is it possible to use live rock with Kanaplex?