Please walk me through setting up a fishless frag system for coral QT

[MuscleBobBuffPants]

I’m planning on using a 25 gallon AIO tank to QT my frags before I put them in my main display. How can I run a successful fish-less frag tank so that my corals are growing and doing well for the 72 fallow period before they are moved to my main display?

 

[BostonReefer300]

You'll want some snails/hermits in there for detritus and algae control. Some light feeding of this cleanup crew plus whatever your feeding the corals (reef roids, etc.) will be plenty to maintain a healthy biofilter in your tank. Start things off with a bottle of biospira or similar.