Heres the deal I am running Vanilla Kush, Ice Cream, Tangerine Dream , Sweet Tooth and Super Lemon Haze under 3x600=1800w MH/HPS lights. I have a total of 23 plants in 3 gallon grow bags. Half are in soil(75% Sunshine Advanced Mix #4,15% Fox Farm original planting mix and 10% perlite) and the other half are in CoCo. I have CO2 running at 1100 ppm and my atmosphere is 80deg, 50-60% humidity. Feeding Schedule: (starting water - 50-75ppm) Soils 8ml/gal Advanced Nutrients Sensi Grow 6ml/gal VooDoo Juice, B-52 PH 6.3 EC 1.8 this last feed i added 5ml/gal MagiCal when i noticed the yellowing on the leaves but it doesnt seem to be improving. Cocos 15ml/gal Hesi Coco 6/ml gal VooDoo Juice, B-52 PH 5.9 E.C 1.1 also added 10ml/gal Magical this last watering to 2 sweet tooths since these were more deficient than the soils. If anyone can point out wtf im doing wrong that would be great!!!