Day 24 update. Bought a humidifier.I think this is a must gadget, and i hope this will take care of my problems. Increased humidity from 30 to 60%, adjusted the fans and the lights properly.Maybe those brown spots was also a case of overwatering too.I used to spray the soil everyday to bring the humidity up and maybe the water was penetrating deep down, who knows for sure?At least its not pests. Anyways i have also started feeding since day 18, fish mix and bioheaven 1ml/L each.Water-feed-water-feed schedule. Gorilla cookie started preflowering from day 18..Green crack showed pistils but no hairs yet.