hotshotisdashit
Well-Known Member
Great newbie answer...Over-fertilizing(doesn't always present itself as burning or discoloration), under-fertilizing, over-watering, under-watering, improper nutrient ratios, improper air circulation/ventilation, temperatures too high or low, inefficient/old ballasts, old bulbs/cheap bulbs, overly-aggressive canopy manipulation during flower, soil compaction from cheap dirt and "flushing", over-filling the space, under-filling the space, improper plant spacing, strain........just to name a few.