emerald crab eating corals?

[Samw]

I currently have 3 emeralds in my tank. I've always had at least 1 emerald crab in my tank at all times and I've never had a problem. Generally, whenever I get a new coral in my tank, my hermits, various other cleanup crew, and blue linkia all converge on it to feed on the new algaes that came on the new coral's base. So I think that's all that is happening to your new coral.