Some Kind Of burn Spots big fan leaves HELLP!!

there is some kind of burn spots on the leaves i have some pics of it but there takein from my phone i give them about 6.5ph 600ppm the lights are about 16 inchs away help me what is it

is that a soil or hydro grow? if its hydro your ph is off, and 600ppm could maybe be a little nute burn. try to bring it down to 400 ppm.

no its soil

is that why the leaves keep bending downwords after i water them

What sort of nutrients are you using? What stage is that plant in? Are you lights air cooled? What sort of lights are you using?

Don't sweat it too much man they look OK. Lay off the water for a day or2

im useing IONIC Grow Solution its for hydro but the guy told me u can use it for earth and its just as good the plants are about a mounth and a half old thay have 2 - 1000hps on a rail and two fans blowing between the lights and the plants

k someone help me please

there is some kind of burn spots on the leaves i give them about 6.5ph 600ppm the lights are about 16 inchs away help me what is it