Ok, No FOOD.....and lack of water....seems to be the issue. I Also have too much wind blowing in from the intake at the bottom across the plants and 2 small fans blowing I think.
It was very bad, those bottom leaves were basically wilted flat to the ground and yellow.
( I didn't even take a picture because it was so hopeless and disgusting )
I went into emergency mode the other day and watered much more than before and fed them (RO water with Jacks Palm and Cal/Mag ) around 120 ppm) after seeing the two bottom leaves start to turn yellow and start wilting flat across the ground. Turned off the inside fans and just had the intake moving air around. I decided to leave the lights on 24/7 to make sure the humidity stayed low which it did at around 40-45%
For sure being too careful about watering and using too little created an issue with the roots not being able to expand as much into the medium as they could as the plants grew bigger.
The Problem seedling is recovering and the leaves actually are starting to shine a little and raise off the ground. It also looks to be growing taller slightly.
Still not perfect, but much better than it was 24 hours ago....Will be watching and hoping...
The third seedling is IMHO not the same pheno type and is much different esp the color. The leaves are somewhat skinnier....perhaps a male?
Seedling #1 ( Problem Child )
Seedling #2 ( Similar to #1 Pheno type ) this one has most of the intake air blowing across it.
Seedling #3 ( Different Pheno? )