Think I have a prob. Have a look

Lemon Haze Clone. 2 weeks into flower. CFL Cabinet grow. soil mixed with perlite. Using MG mixed in water. Still giving veg nutes. Started getting this on the leaves. The big spot on the edge(pic 1)is brittle and crumbled a little. Havent had a prob up to this point. Any Idea what it is? Its not on all the leaves either. I'd say about a half dozen so far.

Nutes burn

should just give it water then for a while to clear it up?

not nute burn. looks like a micronutrient deficiency. I'd supplement epsom salts and a something like superthrive if you can

Yes try that if doesnt help try superthrive

I concur with bigrake ... it looks like a splash burn to me. Veg nutes onto leaves tend to do that. cn

earth juice makes a nice micronute product as well