Indoor Curling leaves question

[Jerseyfunk]

Good morning all was hoping to jump on here to get some other causes of curling leaves i have my 250W MH light about 18-20 inches away from my plant i keep an average temp of 83 degrees im using 707, Strain is Flash Babylon. I have exhale bag exhaust fan at top of grow tent and fan for intake at bottom i have them in 1gallon pots. I only have 3 curled leaves on the plant two at a lower node and 1 is a new leave all other plants have no signs of curling this plant is closest to fan. Could this be my problem ? any help would be great

 

[Muddy]

Welcome to AFN. Curling leaves could be a symptom of several different issues. Are they curling up or down? A picture would be a big help. Also, some more information. What is your soil, what nutrients are you using, what strength are you feeding at and how often? Any yellowing or browning along the leaf edge? Answer these questions and post a picture and we can better help you.

 

[Jerseyfunk]

i only feed at 1/2 strength every 10 days the plants are 23 days old with no yellow or brown anywhere still growing quickly and looking very healthy the center finger on a few leaves makes a drastic hook almost pointing directly to the soil all other plants being fed the same but without the symptoms of this hooked leaf on the Flash Babylon. Could it just be genetics? or should i just hold nutes on that girl to see if problem continues. PH is 6.1 on runoff

 

[Muddy]

Leaves curling down like that are a symptom of over fertilization. Autos can be somewhat nutrient sensitive and half strength is a bit much for plants that young, especially if you're using a soil like Fox Farms Ocean Forest that already contains a lot of nutrients. Nute requirements also vary from strain to strain, so what is good for one may not be for another. I would suggest you give it a good flush, 3 times the pot size with water pH balanced to 6.5. 6.1 is a bit low on the pH and could eventually lead to a nutrient lockout situation. Check the run off at the end of the flush and see where it's at then. Ideally you want to be around 6.4 - 6.5.