Most auto growers transplant........even Mephisto, who only sells autos, recommends starting in solo cups and transplanting.
I start my seeds in a solo cup in a 50/50 coco/Perlite mix and transplant after 2 weeks from sprout.
When they look like this.
I start feeding to run off around 3-4 days...
Just use coco and Perlite............70% coco and 30% Perlite.
Ditch the worm castings.
Start in solo cups and start feeding to run off around 3-4 days from sprout using a pH around 6.0.
Never use plain water and never let the coco dry.
I usually transplant to a larger pot around 2 weeks from...
Not sure what that white fabric is, but it appears it's in a solo cup.
Does the solo cup have drainage?
Are the roots supposed to grow through the white fabric?
If so, I would raise it up and fill the cup with coco.
I start feeding around the 3rd day from sprout with a weak nute solution.
Why...