I'm Not a pro at all but I see you keep cal and mag levels up without using a calmag product like calimagic. So is the balance right with iron levels. The 3 are directly linked. Too much cal and mag will give iron deficiency. That's why calmag supplements also address iron. Iron def starts as lightening between veins of leaves then it goes yellow.
Again I'm no pro but if no one else gives you an answer look into it.
I'm Not a pro at all but I see you keep cal and mag levels up without using a calmag product like calimagic. So is the balance right with iron levels. The 3 are directly linked. Too much cal and mag will give iron deficiency. That's why calmag supplements also address iron. Iron def starts as lightening between veins of leaves then it goes yellow.
Again I'm no pro but if no one else gives you an answer look into it.
Yea I agree w monster probably an iron deficiency. If your ph is ok it could also be from watering w cold water or overwatering ,or like monster said too much cal or mag conflicting with its uptake