Day 30F:
I think I've finally figured out what this weird yellowing is, and it's a combination of things that are my fault. I haven't been watering to much runoff lately because it's a pain in the ass to soak up the water as it comes out (yes, I know about the bucket-head, no I don't have one). I also think I've been reading the colors from these GH drops incorrectly and PHing much too low. As a result, I feel like I've got a salt buildup and a fucked up root zone PH, causing a Potassium deficiency. As I was watering today I found these guys hanging out at the bottom of the canopy:
Everything I have read points to Potassium def, and I can only imagine it's a PH issue, so I've been PH'ing higher and hitting her with an extra half gallon of h2o in between feedings to clear things up. I've also turned the light down a bit as I feel having 220w of LED about 8" from the canopy was only making things worse. If anyone cares to chime in about my methods, please do. In the meantime...