I had a goni once before and it appeared very healthy for a few months but slowly retracted and died. I got another one recently since my tank seems pretty healthy, all the corals are growing nice and strong. It looks great but now is not extending as much as before. I feed it rotifers. Anything I should try? It is not on the bottom of the tank, it is about 1/4 from the bottom. Should I move it to the sand?