lol, i'm in one too many journals and i missed a few to get back too. If this ever happens again just come to my journal and ask away brah.
@jguit is right, i dropped that chart for the EC question.
Your plants look okay to me. The only thing i was wondering is between the two pots there is a drop down on the rez which i think the water drains. IF light gets to this area than you are gonna be dealing with issues. lets just say, you don't want any light hitting any water. lol, i ran my rez without chiller and in summer i had to drop a bottle of coke that was frozen with water inside of it.
at your stage water drop is very minor and you probably fill it up every week or so . Later in flower you'll be filling the rez every two/three days. plants drink more and some of the water also goes away because of the temps and all.