Slight curling up edges

Auto-flowering variety. Seeing this on a couple of them. I recall seeing it somewhere but haven't been able to find it again. I'd rather catch it early and prevent any real damage.

Soil - FF OF with perilite added
Light - 2x 600w HPS
Temps - 72-78F
Humidity - 44-50%
Nutes - fed once with 1/4 strength BC/Technaflora recipie for success (boost/grow/thrive alive b-1 red/sugar daddy/magical) ~380 ppm
Water - RO to ~10ppm
Age - ~3 weeks

They had a bit much water about 2 weeks ago but recovered fine after drying out and have been doing well aside from this.

+rep for help/links that i haven't scoured yet.

could be watering a little too much but you still look in great shape

i wouldnt worry about that.

SmokeyMcSmokester said:

i wouldnt worry about that.

Click to expand...

Just trying to make sure that if it is indicative of something then I can prevent it before there is any real damage.

from what you posted and the pics, it looks like you have a solid op going...sometimes nature just pops out a few funky leaves...try not to over diagnose your ladies..

as long as temps are low, pH is right, and nutes are at a modest level, everything should be good.

how does the whole plant look?

Tell us more about your temps. Is the 72-78 your average day temp, or is it 72 at night and 78 during the day? Ever get hotter than 78? Leaf edges curling up can be a sign of heat stress, but the temps you're reporting are fairly decent.

Everything else on the plant looks good.
The max temp throughout the whole time this op has been going was 82. This was about 3 inches above plant tops. lowest temp was 66. I see pics with the curling similar to this from heat stress but I can literally touch the glass on my hoods for as long as I want.
I guess I'll just let them keep going.

meetzu said:

Everything else on the plant looks good.
The max temp throughout the whole time this op has been going was 82. This was about 3 inches above plant tops. lowest temp was 66. I see pics with the curling similar to this from heat stress but I can literally touch the glass on my hoods for as long as I want.
I guess I'll just let them keep going.

Click to expand...

yoo mine did that too, very little but still i was like wtf, i backed off on nutes a lil and the new growth is perfect

Your leaves are lookin just like mine, I was overwatering some but backed off and got a moisture meter, smooth sailin now with that.

thats usually how they look whne they just woke up or sleeping.. don't interupt sleep time... how would you feel if someone shinned a bright light on you and started grabbing your arm's? lol