purple tips

Hello growers, what do you think this is? Some leaves are yellowing or have burnt tips, but not all the plants are showing this problem... Temps are 77°F during day, 64 during night, RH 40%. 20 hours light cycle. I have a spider farmer sf2000 (200w) and a spider farmer sf1000 (100w) both on full...

Hi, I got some discolored and claw leaves and I'm not able to understand what's really going on: Light burn? Wind burn? too much nutrients? my fabric pots are dirty and I was thinking that this could block oxygen transpiration making my leaves to curl. -9 of 11 weeks of flowering -temps 78...