Part of first grow Tangerine Dream

td3 still leading the way, and #1 is healthy, however ive been fighting with #2 to diagnose it, best guess is excess phosphorus from the ph being to low in root zone i know my ph meter was off and had to wait to get calibration powder so kinda wingged the last watering based on first one but may have been farther off than expected either way got the items and recalibrated correctly and to be safe upped the ph to 6.7-6.8 this watering. lasting 4-5 days on a watering. Will find out this week if its fixed. update windburn is gone and did not change light location or intensity. so got the curling to stop.