The plant grows now really well, don't know what was wrong, maybe too cold but this is now irrelevant. The roots come out at the bottom of the pot, in two weeks the plants moved into their final 9l Air Pots
@@ShotGunBob, not really, the first day the distance was 10cm and the second day I moved it down to 5 cm ๐ next time I will try to getting closer ๐