Looks good man! I'm on my 2nd Ballz inspired grow now just flipped her on the first. Dont wait 3 weeks to add nutes you will probably have some deficency's at least I did on my current grow. The first grow I started her at 200 ppm using 50 ppm tap water and Cal/mag and she was fine. The Hydroton is a problem but I dont know how to fix it. I washed it 5 times soaked for 3 days in 4 ph water ran the farm for a week prior to planting and it still effected the Ph but as the nutes increase the floranova keeps it in check and the next time you use the hydroton it will be better.
The link in my sig has some pics of my first grow.