Zkittlez OG #1 /r/autoflower BF Grow

She started off strong and everything went very smoothly until around day 55 or so. She started getting yellow up top, and I ended up finding what may have been multiple issues. She was growing with three other girls under the same circumstances, in the same soil, with the same nutrients, although the nutrient schedule was adjusted to the different growth speeds of each girl. Her symptoms *looked* a little like a nutrient lockout, but that was absolutely impossible. Sulfur deficiency came up as a possible culprit. Magnesium deficiency was explored. (Gave her a little magnesium sulfate as a one-two punch for both.) - In the end, it became clear what was happening when she started getting full on yellow tops, with some dark brown spots, and goddamned fungus gnats started appearing in the grow room. Her drainage was poor. Could have been a dry spot in the soil. I';d water her, and she'd have a normal runoff, and she's dry off up top, but water was pooling inside the pot, *above* the drainage holes. Her roots were so thick that they had been filling the drainage holes as well. I kept being confused as to how heavy her port was when she was dry up top. Anyway, I ran a moisture meter into her bottom and it maxed out, even though her soil up top was dry as a bone four inches deep. In the end I just let her dry out until it looked like she was getting limp. It took nine days. The gnats were janky and weren't going after any other the other girls so I just vacuumed them up off of the flood tray a couple times a day until they stopped showing up. Today I did the first cut off of her, watered her, and stuck her back under the light. From her overall mass and my previous experiences, she looks like she'll give me around five ounces, but the yield number above is still speculative. I'll continues to update as I chop more of her and add more pics, of course. Day 89 - The final chop! She is no more! Well, she's drying on the rack.