ok, reason i assumed those are 'bloom' nutes?
i also use FoxFarms.
"Grow Big" in veg stage
"Big Bloom" in flwr. stage
so, the wording had me baffled. if its designed for veg, have at it.

as to your lighting and pix, a suggestion,,,
just a suggestion....

get 1x 26/100W (blue/daylighter) CFL, mount it in your grow area.
when u want to take pix, switch cfl ON, the LEDs OFF.
take your pix and reverse ur lighting back.

it'll get to be a PITA to be shufflin pots in n out just for pix.
plus, less chance of stressin em, if u move them less.
During the veg stage especially, they can definately take a decent level of abuse, but once u go to flwr, handle with care.:thumbsup: