Nissan your tank is looking good. I think we will both battle the glass with this light being so strong for these little tanks but thats okay in my opinion to have light like this I can scrape daily.....
Zoas are funny, some grow rapidly and others take their sweet time. My lime green ones are really spreading fast while the red ones are growing fast but not as fast as the green ones.
I absolutley hate the look of live rock so I don't have as much as you do and each piece I try to get something growing on it to cover the rock as I hate the look of live rock.
Just be patient and they will surpise you oneday with rapid growth
Lookin good though.....