Taking advantange of the automatic water change system to set up a frag tank

[Jin2]

I've seen some people set up coral quarantine tanks by having the AWC pumps send tank water to a separate tank and having the overflow on this tank go to the drain.
I'm curious whether this system could grow corals long-term and be used as a frag tank providing adequate lighting and flow is provided.
what would be the minimum requirements to make this feasible? What are the limitations?

Side note) I don't have any tank running yet, I'm still learning about the hobby. I find the idea of having AWC+QT tank that could then be upgradeable to a frag tank very tempting

 

[Jason_MrFrags]

Issue you would run into would be evaporation from this 2nd tank. If you keep adding the AWC to it the salinity is just going to keep increasing. You would have to figure out how to remove the same amount of salt water that you are adding.