Keeping starfish in reef.

[my2rotties]

I have had a chocolate chip star (brought it back to LFS long ago) and pillow starfish (had to bring them back as well... they eat mushrooms, ricordias and one ate my bubble coral. Perhaps they were not getting what they needed to eat and went to my softies. Never again, but lesson learned and nobody starved.

I am always told to get a sand sifting starfish, but would a sand sifting goby to the same job essentially? Also if a sand sifting goby can do the job, how many are recommended per 100g of water? If I had one of two in my 260g, would they be able to get enough to eat? A goby seems to be very busy and always sifting so I wonder if they do get what they need, even with one in my 260g at the moment.