Really starting to take off this week! After asking some questions, I learned about VPD and changed tent conditions. On day 14 or so, I moved to a 24/0 light schedule from 18/6 and started watering ~100mL daily at midnight. New seedling growth was looking very yellow, but the change helped a great deal. Still in soil only, no nutes, using only Ph water at around 6.0-6.5.