IMO it is pretty easy so far, and from what I have read too. I keep mine covered for now with a 20oz bottle cut off to keep crabs and what not from crawling all over it, and it keeps the flow down a bit too since I am blasting my tank.
I feed it with a turkey baster, but the biggest fish I have is a black ocellaris, who loves to bite, but it tickles. Been feeding it a few pellets daily with a small piece of squid or mussels or whatever is in the mix. Been puffing up a lot now, but it is still relatively small.
From what my research, they seem to like lower light and lower flow. They don't need to be fed, but I want it to grow as quickly as possible. Seems very simple to me. This thing was fragged so I would say it is hardy.