Ok so i'm growing Lowryder #2 x AK47 Auto-Fem. and i'm about a week and a half into it now and i noticed that 2/3 layers of leafs are starting to yellow in between the veins but it's not to bad as of now. I have a General Hydroponic Waterfarm drip system and i feed 3x times a day for 15 minutes. I'm using the fertilizer that the system came with and i'm also using the right amount according to the lable. I don't have a PH tester so i can't give you that amount. On my last grow, Big Bud, i didn't have this problem at all but i kept the feeding system running all day long. I was told to feed it 3x times a day for 15 minutes but i'm kinda thinking it's not good enough and causing a nitrogen defficiency but i'm not totaly sure and was hopeing someone could help. I had the system outside in a closet and the weather un-expectantly droped from 70 F to 50 F. I now moved it into the house but i'm not sure if it's a lack of nutes or the weather. help a stoner in need