Hello everybody,need some help, i just switched light schedule from 18-12 on 11/09 at 8:00 pm...since 11/06 ive been using regular water to water plants because i was getting yellow on the bottom leaves and brow spots,,im using a 250 watt lamp my ph levels are at 6.5 no nutes my temp is at 79 degr.. and i have an intake fan blowing fresh air in and intake cooling my fan and blowing out please any advice id really appreciate it..her's some pics so u guys can get a visual....thanks in advance