DAY 13: was too tired to transplant after work. Just put them into the autopot. They look like they are now stunted badly. The top of the root system was nice and white but the bottom near the drainage holes was starting to get brown. That is the first and last time i am ever going to transplant a plant in my life. That was less than not fun and i am pretty sure it is going to stunt these plants badly. I really feel like throwing them out and starting some new seeds and planting them direct.
Little late now but I believe your issue is watering.
I fully water my solo cups of ProMix HP with .7g/4L of MC
the day before planting the germinated seed.
BTW > I germinate in distilled water with a spritz of hydrogen peroxide. No fooling with towels
Each seed gets their own shot glass inside a lightly covered Tupperware container and I leave it on my kitchen table.
Within 36-48 hrs a tap root will appear. This grow I didn't bother waiting for a good length of root, just as long as it has cracked and a tap root is visible.
I place the seeds a fingernail deep into solo cups and then under my 600w MH light.
First watering is when the cup feels light, likely two or three days. Maybe half a cup around the edges.
Next watering is about a cup around the edges. Next watering to run off...
NO spritzing required ! NO teasing, wet/dry cycle....
And no dome, seems like it will help but just grows weak ass plants. Clones on the other hand can benefit from the higher rh.
I don't spritz because it's hard to control how much water is applied. If you feel you have to mess with them use a syringe so you can measure how much water you are giving.
The day before transplanting I fully water my 5 gallon fabric bags, again with .7g/4L of MC. I use an empty solo cup in the middle of the bag to prepare to receive the transplants.
This is day 12.
This is the roots at transplant day 14. Pop it out of the cup and into the prepared hole, lower right corner.
Easy peasy, no fuss, no stress !
This is a couple of days ago....
BTW > I topped above the fifth node and a few days later cut off the first and second node.
Each branch is trained horizontally until the plant is 20" wide and then allowed to grow vertically. For training I use the soft green wire on wood skewers. The skewers are like $4 for 20.
Good luck with your decision, if they are photoperiod seeds they could still recover.
Cheers