I've got a similar problem. 3 of my plants are affected. It's been 4 days since I noticed the spots and leaves dying. They are 4 weeks into flowering. They are in soil (fox farm) and I am using Botanicare Pure Blend Pro 1-4-5. My PH is low 5.5 and I am trying to adjust with PH up but View attachment 1789890I don't have the foggiest idea what really is the problem. All the other plants are fine ....so far. Pic attached. Any help will be appreciated.View attachment 1789889