Baked Beanz - Blue Goo (Photoperiod)

It seems like all growth stopped and both plant's stems are turning red from the bottom up. It seems like the pH and the nutrients are off, so I am trying my best to fix it. I have ordered some Monkey Soil - Ecosoil Outdoor and mixed in 10% by weight Monkey Soil - Worms (California red worm humus) and some 2 gallon Smart Pots and tried to remove as much of the original soil (universal/cactus 70/30 mix) without damaging the roots. I have watered again only when transplanting, with Brita filtered tap water. When transplanting, I've tried to bury the plants a bit deeper, so they are more stable because they got quite a bit stretched thanks to my sub-par lighting solution.