Can someone please tell me what this is?

[growdumb]

Having problems with a plant mid flower and it's been getting worse. Brown spots on leaves at the top of the plant.

 

[DBdb]

At the top….. light too close?

 

[OSBuds]

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[UpstateRecGrower]

Having problems with a plant mid flower and it's been getting worse. Brown spots on leaves at the top of the plant.

Calcium. Soil or hydro? Pretty much every nutrient line is low in Calcium, If they used Calcium Nitrate as the only source of Nitrogen it wouldn't force so many people to buy a Claim Supplement..