White widow 3rd or 4th week in flower had light a little close so I suspect light burn / heat stress obviously but is there a fix ?
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Welcome to the community 
. What are the temps in your tent? Do you have fans moving the air?
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I would think more nute burn or something like that. The lower leaves wouldn’t be burnt too from the lights.
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Looks like heat stress with some bute burn.
If possible could you give hs your room temp and Humidity
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Agree with @SilvaBack203 on both. Need some info on your environmental conditions, feeding routine and lighting 
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Welcome to the community ! if possible fill out the support ticket I think you’ve had more than one thing going on. 
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