leaf curl mystery. please help

Some of my buddie's plants have leaves curling longeays like a hot dog bun or 'praying' he added epsom salts to cover any magnesium deficiency and they look alittle healthier but the leaves are still curling.

Temp 79 canopy 74 room humidity 40%

leaf curling usually means to much nutes

scwascwa said:

leaf curling usually means to much nutes

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too many nutes or too much water.

well u have no pics so its hard to really say... if u cant find ur problem... flush it(its its not overwatered and that the case) and see how it goes... by trying to corect it with this and that u could do more damage then try to fix the next problem with this and that and b4 u know it ur plant is done for... i dont see mag defeincy being ur problem by ur description... good thing u gave it epsom salts to correct it.. ya dig where im goin here???

He said this started happening just before he added his first round of nuts, they're vegging. He uses a water meter and doesn't water until its reached 1 or 2 on the 1-10 scale(just as its completely dry.)

They're curling up not under, so i don't think it has to do with water.

What about draft? Theres a fan blowing across the top of his plants. between them and the lights.

i dont think draft would do that like i said leaves curling up usually indicates some sort of nute problem or a N deficiaency

also he never said he wasnt using any nutes so thats still my main guess