Culturing brine shrimp in a reef tank?

[rayjay]

That I don't know. But mandarins eating brine is a crap-shoot also. Some will eat brine while others don't. Rots and brine are not a natural food for them.
In any case, the rots are so small it would take an awful lot of them to be of any significant nutrition input.
A lot of corals feed on rotifers.