12/12 at flower for the light setting.
pH can remain between 5.5-6.1ish depending on the time you check it, but I usually top off my reservoir once during the week instead of waiting for the drain/fill. Just so that the PPMs don’t spike, but not everyone on the forum does this.
I know @Bplatinum9 doesn’t top up, she would rather let the system do it’s thang. I don’t check ppm’s often so I can’t speak on whether it’s good for the plant or not, but I’ve had no problems with it.
Good luck with the rest of the grow! I’ll be watching closely
With that said everything looks great!