It's the start of the third week (15th day after germination) not sure how to count the days ;)
Started fertilize last week. Not sure with Number two ... looks like it's having deficiency symptom?! (Color of leaves less green and a brown spot on the right side). Happy for every comment.
Watering all plants every two to three days with now approx. 0,8 liters of water. Every second time with grow booster by RQS.