Leaves From Bottom To Thrid Node Pic

LEAVE TURNED TO YELLOW AND HAVE THOSE TINY BLACK DOTS . ANYBODY KNOW WHY MY PLANTS IS SICK ?
400 WATTS HPS
400 WATTS MH
12/12HR
TEMP 79
FOXFARM LIGHT WARRIOIR
13 INCHS TALL
LIGHT FROM PLANTS 12 INCHS
WHAT I DO WRONG ?

Please Help >

don't know if I can be of much help, I use aeroponic, but I notice in my setup that if the PH was off just a little bit it made a big difference. Maybe if you PH your water first that might bring some good luck. I also use Fox Farms but am currently using Grow Big and Tiger Bloom. If your in flowering stage then I do remember hearing that the fan leaves will yellow a bit in preparation of producing flowers. I may be retarded though im on my first grow still. And i just started flowering last friday. Good ,luck man

What type of water are you using (tap, city, well, distilled), and also how often are you using nutes? Have you noticed alot of bugs in your closet?

i use carborn filter tap water and the ph is 6.0 i nute them one every other time . no i dont see any bug in cloest .

any advice ?