Hey
@Mycka!
They look fine to me. Just a bit burned. I would increase the distance with the led to 30cm at least.
Also, it depends on what water are you using to feed them. In Russia tap water could be a little challenging:
"In some regions, the quality of tap water is pretty terrible. In central Russia, there’s a high concentration of ferrum in the water, in Siberia there’s high concentration of silicon and manganese, Yamal’s tap water has too much calcium, and in Altai - too much sulfate" (taken from an article based on a public report by the goverment).
Anyway, they look good. Have fun growing them!