Curling leaves look like Claws

[MEDICINALUSER]

hmmmm

 

[Justin_Credible]

1st and foremost...what is your med? Soil? Coco? Hyd? Need some prospective before can help you...pic?

 

[Talonted]

well from what ive seen on the urban grower, Co2 was usually kept at 1800 parts. Low humidity is one big problem that you should correct in flowering. hang warm wet towels if you have to. yes they do curl if it gets to dry

 

[Justin_Credible]

I agree that leaves curl if too dry, but what I was wondering was if this is a soil thing where the soil is too hot....too much nute at once...etc. Not enough info given to properly give the advice...

 

[Talonted]

you see some curling going on with the whiny indica's when you first show em chemicals. But they dont burn. and the curls go away unless your 6 or more weeks into flowering, then the tricomes hold them in place lol.

 

[milehimedi]

whats the ppms of your water?

 

[Talonted]

yeah what he said

 

[ralph]

Check your PH?

 

[NiteTiger]

Check your PH?

First step, always.

 

[PetFlora]

This does not apply to grow but you asked "What besides N toxicity?

Nitrogen lockout. Too much P or K. I think K.
"Have calibrated meters and ph isnt bad." Tell us

You always need N; more than most bloom nutes supply. When P or K levels are way higher than N, they can lock out the N

 

[hazydays]

Too much N does not cause the claw. And N uptake is not controlled by pH. In soil low pH can kill the microbes that are making N available by their breaking down of organic matter and reduce its availability. At high pH N volatizes and goes away.

 

[keat]

I got the same problem with my NL's.
Tried watering with bottlewater so its not the PH, got no ph-testers by the way.
And its not too hot, its about 26-27C during daytime.
I thought it could be some defficency but using nutes doesnt seem to help, neither flushing.

Growing in dirt, the brand is probably not known by most of the folks here cause its swedish soil.
Same with the nutes.

 

[Justin_Credible]

First step, always.

Of course that is the basics. But I am wondering if you are using your nutes too much and not enough ro water in between feedings.

 

[Talonted]

temp flux beyond 10 degree differences and low humidity does this as well!! if you have ruled out too much food

 

[PetFlora]

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