So im looking at adding a new tang to my setup, which is a 1.5m 700L. I have 4 tangs. I recently removed the largest, which was a sailfin. I have been looking at options and its either a Gem tang or powderblue. Now i have had a wipe-out before because of a powder blue. The plan is a 6 week QT this time around, doing waterchanges from the DT into the QT tank. This way i should see if any possible parasites that may exist in the DT affect the powder blue. Do you guys think that would be a good way to do it?