Help with these girls

Hi guys,

I have some problems with my current grow, here they are:

They are 12-week old autoflowers*, which started to flower on week 11, but on a very slow growth.
*seeds from buds I smoked before, the first grow was a success and flowered automatically. I guess it's because of defoliation/topping that stressed them too much this time.

Lights were 18/6 until week 10, then flipped to 12/12. 240w QB
PH: 6,5
20ml of BioBizz nutes per liter of water - Biogrow/biobloom/bioheaven/alg-a-mic/topmax
Temp: 26 to 30ºC
RH: 45-50%


1 - one of them have leaves turning brown and getting crispy/droopy. I thought it could be overfert, but tried giving less nutes and didn't work.
1.jpg2.jpg3.jpg

2 - one plant is stretching as hell and touching the light, what could I do? I raised the light twice and it keeps growing taller, no matter what I do.
overall.jpg
 
Top