Seeing curling leaf edges on my seedlings. I’m running at about 80 degrees F & 65% relH. They’re in coco/perlite. I was thinking that the temp & relH were right where I wanted them… but now I’m thinking maybe I should back off on the humidity some? They just started getting light nutes at the beginning of the 2nd week. Always watering at a pH of 6 (to runoff / twice a day) and with the nutes, it was about 435ppm. But I had been seeing the curling before I started to feed them. Light is a HLG 260W QB Rspec kit (pulling 233W at wall) - reading about 40,000 lux at the canopies.
This chart is from Day 1 till right now… Day 11.