Originally Posted by michika (Post 259785)

What about this:
Plumbing two tanks into your existing system, a refugium, and a QT/time out tank. Plumb the QT system so that you can take it offline from the main system, and include a HOB filter etc. for water movement. This way you have the option to make a true QT system, as well you can take out any fish that may need separating from the tank, but don't need to be in an independant system.

I would say go for the biggest QT & 'fug. that you can, it will increase your total water volume, and that in turn will go a long ways to help stabalize any chemistry etc.