Welcome to R2R!!
This is a Great place for info and Help
as your tank matures you will get all different types of uglies... just part of the waiting game.I normally wait until the tank has cycled before adding CuC..Keep ghost feeding and once ammonia has not showed up for a week or so then add CuC..Everyone does it different..My last 2 tanks I waited about 45 days or so.
Welcome to R2R! I like your rockwork. It looks kinda like the rockscape in my old nano hex tank. You are going to love this forum. Great information, great buildthreads, and even better people. Enjoy!