I am new to tonmo and aquariums. I have to be able to answer some questions before I can actually get the tank and critters, etc. Does coral stop growing once it fills a space or does it need to be divided or something? What are the necessary tools for measuring water quality and what are the qualities that the water should be at before getting a ceph? How big does a ceph tank need to be for a ceph about 4 or 5 cm total length? How long should I wait to cure the tank? How much does it cost to maintain a ceph tank? Any answers to any of these questions would be GREAT! Thnx in advance!