Worry for my Green Goniopora

[TVR]

I got the skeleton back in feb when my tanks wasn't even fully cycled (Even now, I believe)
I had no clue what it is when my wife and the little boy brought it home back in Feb. from a lfs. I tried glued them onto abase rock in the middle of the tank and rushed myself to do some internet researches.
Well, they now still doing great with my period feeding of some kinda green stuff.
I did aquite a bit of research around this nice little coral and found that NO ONE HAD EVER HAVE THIS SUCCESSFULLY LAST LONG ENOUGH IN THEIR REEF SYSTEM - Maybe it just belong to nature or closed to it.
But since it now already in my tank, I am started to worry for this little poor and beautyful babe.
I worry for it doom might comes but more for the little boy, that he's every come and check on his "Gooni" (he named it) - So he would properly kill me if I let it dyed.
It look like this but much more green on the tentacles when opening:
http://www.saltwaterfish.com/site_11...12_62_4_4.html
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Anyone had has any experience with this, please share. Thank you in advance.