Hey guys I'm a first time grower I have a GG4 in Coco I use the professors A B nutrients she is under a 100w ProGro Halo LED and noticed the leaves were beginning to turn purple on the tips of the upper leaves and then they turned into a deeper brown kind of stain. Covid has prevented me from...
From what I've read previously 18/6 is ideal while flowering Autos as the sleep cycle helps raise the THC potency. I'm a first timer though so don't take my word for it!