Nutrients concentration raised to 1150ppm. Flowers has started preflowering period. There is burst in grow speed. I think they should start stretching at the week.
@Falc212, So sorry but we haven't anything like this. Keep in mind autoflowers need the same, the only important thing is the plant start to flower at 3 or 4 week. If you use a complete soil, you probably don't need vegetative fertilisers. Only something for the roots.