Hi everyone im a newb. I have 30 gallon sw tank with 8 lbs of LR and 3 inch sand bed. I am going to get 12 more lbs of LR and 30 lbs or baserock. I would like to keep, an ocellaris clown, a firefish, and a school of 3-5 chromis. Will this work? I also would like to do reef eventually. I have a...