At 6th of april I set the light higher (now 37-45cm, the plants have differents of high) and put the light intense to 75%. It was too much I saw in the morning and get down to 50% again. Some leaves are a little bit burned now:(
@JamesBarre, yes, thats true. But I cut really carefully and so the final weight is however a little bit less than I hoped for. Otherwise they hadnt a tent from beginning, the first 4 weeks they get only sunlight in spring, so I think I cant complain;))