I agree... What is your feeding schedual and NPK value? Amt using too!those aren't the best pics but your plants look really sick.
what's your ppm?
it might be a nutrient toxicity.
Some plants are more sensitive than others.my ppm's are at 1200 ph is 5.9 and Im feeding tiger bloom, big bloom and cha ching and some budcandy. All other plants are fine.
on the left is for veg grow and on the right is for flowering period ?Some plants are more sensitive than others.
What is your NPK values?
Ph chart...
View attachment 1161843Hope this might help...
No left is Hyroon the left is for veg grow and on the right is for flowering period ?