It was getting damaged by the sun on windowsill, after 3 days under light topped, for better results you should let the shoots next to fan leaves grow and develop a bit, so you know the roots have established, but due using big percentage of perlite the roots develop much faster so also transplanted from 5 litre to 20 L and the roots holded all substrate nicely so I was right about topping it slightly earlier just perfect timing in couple days the shoots will blast strong ones which also will be topped or simply pinched out to promote stronger a more shoots to make a full canopy of just colas so just pure bud on harvest if able to pull of it will be easy 500g dry bud on 1 plant done with cross of big bug and Northern lights, but this bubba has potential to surpass the feat in just 12-14 week this is giving extra veg week as this strain for sure won't need to go over 8 weeks flowering at all