Not ready yet for inverts that are in and rock? (Sea stars, urchins etc....) Some corals, sponges, fauna may die creating a spike? Premium for established, base for cycle.Why? I don't understand the logic. How can your running tank with all its flow, filtration, and lighting not be the best place for your brand new expensive live rock? There will be minimal die off. You probably won't even get an ammonia spike.