OK, so I might have made a mistake. I purchased a Linckia at the Lansing Swap without knowing enought about their feeding requirements. As I understand it, they eat microbial organisms off the rocks and glass. I have a 24 gallon nano cube with about 25 pounds of rock. Is that enough space for them? If not, can I supplement their food supply or should I find a LFS to take it too. I would hate to starve it to death.