Ran into yellow leaf curled and browned last week with first two plants: Panama & Auto Critical. Other three growing w/o spot yet. Same issue as batch #2. Thought nutrient lack so added raw supplement to watering didn't seem much before flush but never completed yellow. Thought cause was watering w/too high PH8.8 tap before learning to adjust for 6.5 aim w/citrus acid. These plants been watered always w/PH 6-7 range but both popped yellow/brown. Flushed last watering this watering added Dr. Earth fertilizer. Saw grower video explaining brown/curl leaf as leaves 'shading' themselves from light source since plant could not get enough from soil to cover the continual need so leaf is preventing too much light to kick in the process that the nutrient lack/watering can't keep up with. So figured watering could be issue since always kept plants on dried side. Critical Mass wilted before turning yellow so now increased the watering 2-3 days to see if helps along w/flush/fertilizer.