Hey, GrowGal! :tiphat:
By the looks of those gals, you may be getting some nute lockout. Are the pics accurate? I see the veins showing green, with yellowing to the margins?

should have plenty of good stuff to carry you through at least the 3rd leaf stage.
1)Do you know what your pH is going both in and out?
[h=2]PH Calculation Guide by GoAuto6[/h]
Rough Calculation Guide:
Here's some good info on ph.....
If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference
If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.
For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5
If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5
2) Did you amend your soil (add anything to it, like perlite)?
Slow draining soils, or overly wet soils, can have a huge influence on what your roots can take up.
3) Is that foil on your walls?
Foil bad. :no: Aside from fire and electrical shock issues, it can create hot spots that could burn your gals. The wrinkles in foil, depending on how the light hits them, can act like little magnifying glasses. Some folks use mylar or similar products, I like my plain old flat white paint. Not gloss or semi, just flat white.
