Marine Snow will definitely not keep that coral alive for very long. I would read the sticky at the top of this forum for advice on what to give this guy. I don't have one, and am not one of those MS bashers but it's not designed for sustaining nps corals. Having looked at acquiring one in the past, I know they're one of those filter feeders that can ingest somewhat larger particles. I would pick up some Cyclopeeze, rotifers and baby brine shrimp, to start. I believe your coral will quickly whither away on its current diet