What’s this curling??

These plants have this curling happening and I’m not sure why. is this a nutrient issue? I keep lights on 18 hours. Indoor grow. Lotus nutrients. One is 7 weeks along and the other 6 (flower). I’m on top of my pH levels. Temp 73 and humidity 58%. The buds look good but those leaves concern me. Any advice welcome!

Looks like your letting them get to dry between waterings. Try keeping medium used moist not so much wet but wetish if that makes sense. Also maybe a potassium phosphorus deficiency I would give them some epsom salt with my next watering to help level them out and get them to finish out stronger.

Makes perfect sense and GUILTY!! I’ve let them go longer than I should between waterings. Thank you!!

Anytime. They look nice should be ready in two weeks. When you thinking about pulling them.

2 weeks ish is the plan!