I have heard and read that you can supplement the starfish with food in the sandbed. BUT on the same note a very highly regarded member here thinks that is not possible. SO, I didn't get the star yet, but I think I may be close. My sandbed looks pretty darn active and full of life. But I still am hesitant.
Good luck with yours, maybe it will work out ok.
he might scavenge pieces of food and film algae and be ok.
I carry around with me when I go shopping a reference book for marine fish and corals. It gives me the truth no matter what the lfs
is standing there telling me. lol