What should I add now?

[jess128]

I've had live rock in my tank for 3 weeks now and ammonia levels are still pretty crazy, but everything else seems alright. When should I add some cleaner shrimp or snails or anything like that? My first fish will by a clownfish, so should I get a cleaner crew settles in before the fish, or after? I won't be adding fish for a while, I highly doubt my water will be ready for anything for a while. Just planning ahead!
-Jess