Also, your cycle won't take long with dry rock.  If you want to speed it up, add Prodibio Start Up.  I add this to all new tanks that are started with dry rock.  Really seems to help establish the good bacteria (rather than bad).  I just add one pack (I think it has 6 or 8 vials in it) as directed until it's gone.  I know the instructions say to use it longer, but one pack sure helps.  
