Can you identify problem with these leaves ?

[420weedman]

i thought maybe calcium def ? its only on a few fan leaves and doesnt seem to be spreading so im not really worried ... yet

 

[ontariogrower]

nute or light burn how close is your lights

 

[jimboy227]

Looks like over transpiration to me, I had a similar problem, I thought it was nute burn. Turned out my plants were losing water faster than they could take it in. Problem was poor ventilation, grow room gor too hot.

 

[420weedman]

my room is like 72F max now, i did raise the lights
if you look at the small leaf in the bottom right corner its got a brown tip and is curling downward ... quite a few leaves are doing that too

 

[GreenStingRay]

did you mist your plants before your light comes on, thats sorta the lookswhat i had when i made the mistake

 

[brasmith]

It is a mag deficiancy.

 

[Jonus]

i thought maybe calcium def ? its only on a few fan leaves and doesnt seem to be spreading so im not really worried ... yet

It is a mag deficiancy.

Looks like it could be both. Although it looks more calcium def than mag to me. Whats the pH of the run off in your soil?

 

[chrislvsdanielle]

hi there do you even spray your plants and get water drops or nute on the leaves that looks like nute burn