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Dear Friends, I am experimenting a strange situation with my SCOG indoor plants. They are flowering pretty nicely. The buds are thick and dense at its 5th week of flowering. It's been perhaps the best of my crops, nevertheless in these last week something strange is happening in the middle of the screen, the leafs are turning yellow and dying. In other ocations this has happened before but what worries me is that the leafs have some dark brown stains in the middle, as if they were rotting. It is definitely not a case of fungi, because I control humidity with two fans. I don’t think it might be nutrient burns because I’m using organic feeding. The variables that have changed in the room is the temperature dropping by 7-9 degrees Celsius. Before my room was at an average of 30° and now its 21°. The area where the yellowish with brown spots is appearing is precisely at the center of the screen where the light hits more directly. They are not burned, all thought I gave more distance from the light to the screen, about 50cm. I’m attaching four photos so you can give me advise. These are my last 2 seeds I bought in GHS in Amsterdam, and most probably I wont be traveling to Europe from Quito, Ecuador, in a long time, so I can't aford to loose this almost ready harvest! Please, dear friends in the comunity, help. !!!