folding leaves

[demcc3]

Hello. I know I may get a variety of answers for this issue but bare with me lol. This is White Widow, germinated on Jan.8. She's about 14" tall right now, Here are the other specs:
5 gal cloth, Coast of Maine Stonington Blend. Led lighting (Flora Gear S4 400w) 78 degrees and fluctuates between 48-55 humidity. (humidity can be adjusted to be higher or lower)
Last feeding/watering was 2/19 due for another this coming Wednesday.

The leaves, as you should see in photo are slightly folding (cupping) Is this a cal mag issue? Nitrogen or other nutrient issue? I don't THINK its heat stress the lights are at 20" above canopy and lights are not at 100%

 

[3Berries]

Look into Vapor Pressure Differential. There is a sweet spot with temp and RH. 78F and 68-70%RH would be good. Looks stressed to me.

https://vpdchart.com/#F,69,77.9,77.9,0

 

[StickyNugsAZ]

10 days seems a long time between watering to me. Do the bags feel dry and lightweight? Maybe they are ready for watering

 

[Fjeff]

Check out these trouble shooting charts. Both indicate light to close.

 

[Franklin]

Tacoing is usually too much light. The leaves are literally trying to avoid the light. Turn the light down, move the light back, and/or give the plant fewer hours of light. Less is more. The may be other causes but that's where I would start. Good luck!

 

[dirtymike]

right on

 

[Blowdout2269]

I think Fjeff nailed it.

 

[Bluey]

My leaves taco on ocassion, just a few here and there and I dont worry about it.
Check your climate, light and fertigation parameters, if they look good then your plant will be fine.
your plant looks great by the way