You are already way over stocked, anemones should only go into a set up that is at least 1 year old, so the tank has time to mature and very stable water conditions, along with good lighting. Unless your mandarin is eating other foods besides pods
, you will not be able to keep him alive long in a 55 unless you are going to buy pods
on a weekly bases. Not trying to be harsh but you have too much and not the right type of fish and corals crammed into your 55. I know its not what anyone wants to hear but we are trying to help.