I've kept one and found it perferred moderate lighting and moderate current. I found when I went to higher wattage halides it wasn't expanding or growing as quickly as it did under the lower wattage lamps. Also, if I got the current whipping around it too fast it didn't extend as well.
As for feeding - I tried target feeding various stuff, but in the end I found it did best if left alone. They seem to get all they need from fish feedings, light and whatever else is in tank (bacteria, detritus, pods, etc.?).
My clowns never hosted in it, but that's definitely a possibility.
HTH