I am a first time grower and went with the autoflower sour diesel from ILGM. I am at about week 7 of growing and my plant have begun to flower. I am growing the plant partially indoors and on my balcony. They get natural sunlight throughout the day. The soil is fox farm ocean forest. I am also using the fox farm soil trio nutrients. I only use 1/3 the amount of nutrients which is directed on the schedule. My leaves are now starting to have burn spots and the edges are turning brown. Is this just a nutrient burn or is there some type of deficiency? Please help!