I know this have nothing to do with this thread but I need help on this one. my og girls are getting mad yellow leafs. its going on the fifth week flower. I havent spray it for couple week and the nut level is about 900-1100 ppm with co2 level about 1000-1400ppm. the temp is about high 80 and light are about 18 inch high 1000w hid air cool. Here is some pic.