Deformated leaves issue

Your ph is set wrong for coco my friend. 5.5 to 6.0 in veg, and 6.0 to 6.5 in flower time. It's that simple why your leaves are funky. Also go easy on the ferts, as cannabis really don't need much food. Less is best. If your feeding by the label, never go over half.

I'm gonna guess by the way the leaves look, that your overwatering because you have read that you are supposed water everyday In coco but growing in Coco with "probably" dry organic amendments we treat the coco like soil and let it dry out some before we water again because if not this will cause deficiencies and nutrient burns all at the same time.

I am going with Cal-Mag first in gallon of water Then going to have you add 1 TBSP of molasses to the cal-mag water. Only cal-mag and molasses, make sure it’s unsulphered please ( molasses) in ph balanced water. Add that mixture to your plant Rather err in caution than blast your plant with unnecessary nutrients furthering the issue It looks to me like a magnesium deficiency due to the veins of the leaves remaining green, but the yellowing is happening. It also is happening on older leaves first , which means it’s pulling from older leaves to supply life to younger leaves. That means it’s a mobile nutrient, not immobile. Magnesium is mobile, while calcium is not. Coco-coir uses cal-mag very readily unless you are using organic nutes and then that issue is resolved.