Leaves tips are curling down and edges slightly curled up, help!

Okay, I have a 5x5 tent with 8 plants that have been growing from clones and have been transplanted for a week.They are in 2L pots in Fox Farm soil. They are under a 1000 watt HPS bulb placed about 18-20" from canopy. Ventilation is great, temp at canopy steady between 79-82 F, Humidity ranges from 20-30%. I have been giving them nothing but RO water with approx 6 pH (dont have a digital pH meter, just the liquid drops) since transplant, no nutes yet. They have been growing at an amazing rate since transplant, great coloration but the leaves are curling down at the tip and slightly curling up along the edges. What is going on with that?

Thanks in advance, new grower here!

Moisture stress most likely, get them more humidity and drop temps slightly and they should start to rebound, some pictures would help also.

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Just put a humidifier in there today, will update if that helps. I also read somewhere that Fox Farm soil could possibly be too "rich" for young plants and they could show signs of getting too much nutrients just from the soil with no nutes added. Does this sound like it could fall into the realm of possibility?

Sorry these are the best pictures I can take because I'm using a HPS bulb it makes it nearly impossible to take a good picture so I have to turn it off and use a flashlight.

I raised my light up a few more inches and the humidity is back to to 40-50% and the plants seems waaay better, I think it was a combination of the light being slightly too close and the humidity too low

How's drainage since transplant, water schedule, look a little stressed heat and over watered/need air. Good light adjust and ride her out.

herbbilly said:

How's drainage since transplant, water schedule, look a little stressed heat and over watered/need air. Good light adjust and ride her out.

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Hey bro!! How's it going?? Hope everything is good your way!!
So did you ever get your babies straightned out? Let me know??

Yes fox farms tends to be a little on the hot side due to all the poop they add in.... high Nitrogen content... plants just might be sensitive to it...

Hope ur good you gotta a lot of plans comin don't let them ducks eat ur ladies. You've gone strain nutty and I'm killing myself to get a bean.