Leaves with dark purple stains (help)

Please, some help diagnosing my plant.

Info:

Girl Scout Cookies Auto, 2º week flowering.

Medium Peat & Perlite

Growing Indoor, with bulb leds. (Like a LOT of bulbs (a grid with 16), getting 100k lux near plant, 20 cm distance. I dont know if this is a lot, but doesnt seems that its a light burn. Ive read that bulb leds are not very strong.)

Using Bio-Bizz nutrients (Bio-Grow since vegetative, and just started Top-Max & Bio-Bloom in those 2 weeks/flowering.) In the first week of flowering I put very little Top-Max and Bio-Bloom, worried about overdose. But now Im going with the Bio-Bizz Schedule, no fear, because I suspect shes is demanding more nutrientes than what Im giving her.)

I do a 'main watering' with nutrients every sunday, and an 'only watering' usually at wednesday (if I feel she need it).
Struggling a bit with temperature and humidity, but no drastic peaks.

These purple stains appeared just after pre-flowering. Its not all the leaves, but its catching mainly some new small ones. And also affecting some branchs.

Thanks!

Do you check your temperature when the lights have been off for a few hours? Looks like a too cold at dark time problem to me

Darkoh69 said:

Do you check your temperature when the lights have been off for a few hours? Looks like a too cold at dark time problem to me

Click to expand...

Hey man, crazy you said that, because it was something I really was worried about, but didnt know could be an issue... I had this SAME feedback in another forum, so good to have smart people around Its my first growth, so the slightest changes get me panicked lol... Thanks a lot!

bermas said:

Please, some help diagnosing my plant.

Info:

Girl Scout Cookies Auto, 2º week flowering.

Medium Peat & Perlite

Growing Indoor, with bulb leds. (Like a LOT of bulbs (a grid with 16), getting 100k lux near plant, 20 cm distance. I dont know if this is a lot, but doesnt seems that its a light burn. Ive read that bulb leds are not very strong.)

Using Bio-Bizz nutrients (Bio-Grow since vegetative, and just started Top-Max & Bio-Bloom in those 2 weeks/flowering.) In the first week of flowering I put very little Top-Max and Bio-Bloom, worried about overdose. But now Im going with the Bio-Bizz Schedule, no fear, because I suspect shes is demanding more nutrientes than what Im giving her.)

I do a 'main watering' with nutrients every sunday, and an 'only watering' usually at wednesday (if I feel she need it).
Struggling a bit with temperature and humidity, but no drastic peaks.

These purple stains appeared just after pre-flowering. Its not all the leaves, but its catching mainly some new small ones. And also affecting some branchs.

Thanks!

View attachment 4897967View attachment 4897968View attachment 4897969View attachment 4897970

Click to expand...

What’s the strain?

Sry see it duh

Just started looking at pics