Critical Kush problems

[Schrödingerscat]

hey guys, could you spot the problem with these 17 days old critical kush girls? they are in a top-fed DWC hydro with air pumps. i use a high powered LED, CO2 and AN Nutes and additives (Voodoo, Piranha, Tarantula, B52)



the lower leaves curling up is due to the light being too closed in the first week, as soon as in noticed it i moved the LED from 20cm to 40cm away from the canopy. but i can't figure the cause of brown spots and the yellowing of some leaves. the other problem is that leaves appear too fluffy and spongey to me, which i figured is a sign of overwatering, but the roots look very happy and strong to me, and there is a air stone under each of the roots which gives them more than enough oxygen, i also water them on cycles of 15min on/30min off (the lower part of the roots are constantly in water), so i dont think they are overwatered. i'd be happy to hear your opinioins, thanks

 

[Schrödingerscat]

here are some more pics

 

[Schrödingerscat]

so is this how you welcome someone new...?
any idea guys?! i gave them some extra cal/mag and a reboost of base nutes from 1.5 ml/l to 3 ml/l but they're getting worse and not better!

 

[rastas]

Dude, cant see no pictures... Did you figure out what was the problem?

 

[jradMIT]

Your using too much nutes, AN from my experience is alot of hype and marketing, its pretty much noob fodder with super expensive prices and ridiculous strong recommended nute strengths, avoid them. Dial back the strength to around 100 ppm.