I have one and i dont target feed it at all. It's really cool. From what I've heard though, they have a really low survival rate in the home aquarium. Mine looks really good though. It looked a lot different at the pet store then when I got it home. Its doing fine with all of my shrooms
,xenia, and long tenticle plate coral. they are the ones really close to it right now. I keep it in moderate flow at the middle of the tank. I have 130w PC
's on a 29gal so i have a little bit more light than you. I think if you kept it from the middle to the top it would do great. I'm not an expert at this thing yet because I've only had it a couple of weeks now.
Anyway its definately a cool addition to any tank. HTH
P.S. I forgot to add, I use cyclopeeze once a week. So, I guess i sort of do feed it!