New to indoor growing, having trouble diagnosing problem.

Samno

Active Member
Hi members, sorry for posting a new thread but needed some help diagnosing my one lady, mid level leaves are starting to show signs of spotting, my ph is perfect at a constant 6.5, environment is 25℃/50-60% humidity with the light on and 21℃/50% humidity with the light off, the only thing I did 2 days ago was change the brand of nutrients, could this be the cause?
 

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