I did nothing special. I started the nutes on day 33 with:
Bio-Grow - 0,75ml/l (2,85ml/gallon)
Bio-Bloom - 2ml/l (7,60ml/gallon)
Next, on day 40:
Bio-Grow - 1ml/l (3,80ml/gallon)
Bio-Bloom - 1ml/l (3,80ml/gallon)
I haven't decided yet how much ferts to use next time.
The light is 400W MH...