Indoor Is my LEC too close?

[SHRED]

These are White Widow autoflowers that are 2 weeks old, 24" under a Sun System 315W LEC.
Temps are good (not hot) but I'm noticing a little upward leaf curl. I have two fans in there blowing with one an oscillating fan blowing just over the tops. Humidity averages about 55 rh.
Could my light be too close for this stage of their lives?

Overall I'm liking how they are growing.
They've received only rainwater and one feeding of diluted tea. They are in a 50/50 mix of Ocean Forest andHappy Frog with added coarse perlite. The 2 on the left were slow to sprout.

 

[surffreak]

Plants look good dude!
24 inches should be fine, 400 watt hid lights can be ok down to about 18 to 20 inches for newborn seedlings, even closer once they're the size of yours. LECS run cooler than HIDs, plus the wattage is less, so you should be able to get a bit closer than that as long as the ventilation is good.

 

[SHRED]

Plants look good dude!
24 inches should be fine, 400 watt hid lights can be ok down to about 18 to 20 inches for newborn seedlings, even closer once they're the size of yours. LECS run cooler than HIDs, plus the wattage is less, so you should be able to get a bit closer than that as long as the ventilation is good.

Thanks. I can't figure out the leaf curling but it's not bad right now. It's almost makes me believe it's a genetic issue.

 

[surffreak]

I've had the same issues (just the edges curling a bit) on newer plants and I still have no idea the actual cause, no one can seem to diagnose it with confidence, and then it's never an issue by flowering time so far in my experience, so I just write it off as growing pains. Hasn't done me wrong yet....

 

[jaymu104]

I've had the same issues (just the edges curling a bit) on newer plants and I still have no idea the actual cause, no one can seem to diagnose it with confidence, and then it's never an issue by flowering time so far in my experience, so I just write it off as growing pains. Hasn't done me wrong yet....

Yeah I get them on young plants under amare

 

[Cannawizard]

Thanks. I can't figure out the leaf curling but it's not bad right now. It's almost makes me believe it's a genetic issue.

Definitely a genetic thing. Been doing ww afs for a while now and mine always do it too.

 

[24hrs]

I find that when the outer edges of the leaf curl up the plants are working well in a warm environment its a normal reaction plants do to speed transpiration to cool the leaf.

Also it has a beneficial side effect of increasing the nutrient uptake which subsequently speeds up the growth rate - *which is why you give the plants ample lighting*
I like to keep the light as close to the the plants as they can tolerate , this way the lights have deeper penetration