I know it sounds crazy because it’s rare. But I’m telling you idk what the hell else it is. Middle of the plant yellowing, red/ pinkish coloring on tip and middle of leaves. I use advanced nutrient sensi a and b, mycho great white, recharge. Light is a phlizon Cree Cobb 450 w and a maxi sun 200w but I only have 450 going right now. Watering when smart pots are semi light but not super dry. Watering until run off. My run off was 6.4 today. Is it under feeding? I swear I hit them with 500ppm like a week ago. Idk boys. It’s driving me crazy. Help. Lol