If you are thinking your fish might spawn. You are looking at some real work to get ready. Green water, rotifers, brine shrimp,etc. I have spent 3 months preparing for my pairs of clowns to spawn. A good book to help you get started is Clownfishes by Joyce D. Wilkerson. Then if you still have an interest to spawning clowns you will need to get a few more specialized books. It's a lot of fun, and a lot of work.
Good luck,
Dale