i actually started up a fuge just for him. bought a few bags of pods from this site. i see the pods in my fuge and the mandarins tummy seems full at all time, so i assume he is happy. i hv enought lr to begin with, but didnt want to tk a chance w him starving since i also hv a scotter blenny. i;d say hv an established tank of at least 8-12 months and lots of rocks.
FYI: that huge cabbage leather is a sinularia dura, they contain and release terpines wich can be detrimental to the growth of many SPS and LPS up to and including death, usually just stunting growth. running carbon and doing plenty of water changes can help defray those effects.
some of the SPS/LPS most effected by the terpines are: Acropora, Cataphyllia, Euphyllia, Pleregyra, and Porites.
others in the sinularia family do the same, I justy wanted to give you a heads up on that.
my cabbage does grow. it heal pretty quick too from cutting off 'heads' for frags.
however i have a nice ORE stylo pretty close to it and it is starting to grow new caps (new addition) and almost all of my LPS eupyllias are growing like crazy and some are almost touching the cabbage.
if you run carbon I wouldnt worry about it at all, If you werent running carbon I would reccomend starting at least one week out of the month. I too have several SPS and sinularia. they usually relaese high concentrations when damaged but if you have a good flow through rate on your carbon the terpines will get filtered out rather quickly.