Well here's an update. Day 39 in the pics and they seem stunted for sure. Not sure what exactly went wrong. Any ideas? I measured the lights and they were at 23" the whole time. Maybe they were too far away or I need better lights? Humidity was also too low the first 20-30 days, and they also look a bit like they have N toxicity. I only watered them with weak kelp and calmag every other water during first half and then stopped gave them one dose of maxibloom.
Next time I plan to put the lights closer, keep humidity around 40-50% and try coco. Anyone have ideas what went wrong?