I got burned with my last fish purchase and it wiped out 70& of my fish. Since I learned my lesson, I'm going to QT from now on. Is it always best to treat with Prazipro and cupramine regardless of current health? BTW, it's a multi colored angel and my QT tank is a 10 gallon with a penquin bio-weel filter with a few pounds of live rock. I assume I have to take the live rock out when treating, correct?