Not looking for a race war but I hear way more hate from the black community than anywhere else. If you're going to do something about it then either fight or help your community become better than the stereotypes.
Again this looks like magnesium def. Yellow leaves green veins. Starts on the outside of the leaf and works in. Also starts at the bottom of the plant and goes up. Could very well be related to your unknown PH
Coco handles calcium and magnesium differently than other mediums. From what I've read it is still needed. Your 1 gallon pots may be ready for twice a day feedings
You've got purple stems and rust spots. Purple stem is calcium and yellowing with rust spots is magnesium. Fix your deficiencies and they should spring back to life