Plant just stop grow.

Uppdate I replant the plant but i guess it is to late.

The soil is too hard for the roots to spread due to overwatering. You should have some perlite on the soil to prevent that.

I grow them outside and germinate the seeds in 2% hydrogen peroxide in a glas first. I live in Thailand. Oki i will add some more perlite and try too keep it more dry. Thanks!

Over watering causing a lack of oxygen in the root zone. Roots need to breathe. Use a pen or pencil and poke some holes in your soil to help it dry out quicker. Stay 4" away from the plant to avoid damage. Adding perlite to your soil will help prevent this

Could be the lights what lights are you using

it could be over watering..

To me it looks extremely overwatered.