It looks to me like the leaves in the last pic are curling up. These is a post here that will tell ya what that means, sorry i'm to new to this to have it memorized yet!

Also I know all strains are different, but I use Fox Farm nutes and I can safely start the ppm at about 500 (After 2 weeks) and thats with a start of 30 ppm. Ive actually got a 2 week clone in a 1850 ppm flowering tub and its getting its groove on so far. I also use superthrive and I don't know if this helps my seedlings and clones, but a few drops per gallon is cheap and seems to lessen shock??

Also FoxFarm makes Grow Big and Grow Big Hydro. I mistakenly bought the regular and have been using the reccommended doses for it with little issues. When I finnish up the regular ill move to the hydro to see if there is any difference.

More stuff you already know: Mix all your nutes in one container with water and just add that till u get the right nutes. I was adding a little of each to feed my tanks and it was never right. Now i can hit watever ppm i like within say 10-20 ppm.