I have a 110 gallon reef tank that I am slowly adding and building. I currently have Rock, a few shrimp, emerald crab, couple pajama cardinals, and a few damsels. My coral collection so far are just a handful of LPS. I am running a Fluval FX6 with a couple power heads. Should I have a protein skimmer of do I not need one until I get more livestock? I am also wondering when it is time how big should I get?
