Help, im at a loss. 5 fish dead in less than 1 week

[Beverly]

I still think the cause of death is ich. If I am right, do not put any new fish in the tank for at least six weeks, with eight weeks being better. This length of time will ensure that any ich present in your tank will go through their life cycles. With no fish in the tank when the ich gets to the "attach to the fish" stage, they will simply die and there will be no more ich in your tank.