I recently purchased live rock that had two red mithrax crabs two snails a filter feeder that looks like a clam and a clam. I just started to cycle my aquarium and want to know if these critters will survive? Do I need to feed the crabs? I don't know exactly what they are eating but they pinch at the rocks all day. Today I noticed a leaf from some halimeda in one crabs grasp and I don't want the little guys to starve. Can I like tweezer them some pieces of brine shrimp while this tank cycles? 75g 60lbs dry rock 15lbs live rock 80lbs live sand. Just started cycling Dec 31.
