Genetics First, followed by environment. This is another soil grow with organic nutes. Im mostly following Soma style...maybe check it out. From what I see constant veg nute type feeds generally dont let the plants run through its spring to fall cycle potential. 64F every night pushes fall colors as nutes transition down to plants consuming the fans...like in nature. My first grow exhibited similar color traits...I optimized grow #2 based on early mistakes. Grow #3 will tell more.
