i am using botnicare liquid karma grow will go to bloom next watering also just started yesterday using sweet berry and cal-mag i have cler-x but am not sure about it well i am new to all of this but i think its for the 2 weeks b4 harvest whats wrong with a couple bottom leaves are yellow and some have rough brown spots on them also one has stems that are green on the bottom half and purpleish on the top same stem 2 colors 1 more thing i am pretty sure that is a male i just want to be sure since this is my first time