Thats what I do with mine... gently let the food wash over the heads when they're extended.
I've had mine about eight months and thought that it was flourishing, but the other day I noticed that it looks as if over the last few months the coral has been receding towards the top of the skeleton... since there isn't anywhere else for it to go I assume that I will eventually lose him.

That being said I was told the same thing... easy to maintain coral. I think they were correct if you finish that statement with 'easy to maintain coral until it's gone'. My daugther had one (green long tentacles), and it started to turn into jelly. Now she has an expensive piece of live rock.

I won't keep another one.