alharrison
Reefing newb
I have a 54 gallon reef aquarium. I put a couple of spiney urchins in it as as part of a cleanup crew for algae. I just put in two star fish. Will the urchins harm the star fish? I put in a couple of turbo snails also as part of the cleanup crew, and I found the urchin sucking one of the snails out of it's shell.