Calcium deficiency. Buy cal,Mc .or lock out is when she can't take up nutes , would need to flush with water only.bout a week take some photos so we can see bud
It's a misconception that you need heat . Stick to 26.c ish or u end up killin her . What light u got . Led need to be further away than Hps . It's the light spectrum that your plant wants not heat from the builb . Good luck