PH is not the problem. I agree with the others it looks overwatered.PH is too high. Not intense enuff light and or the spectrum sucks. use a MH 250 or better for vegee and a HPS 400 for flowering. Also inject CO2 during flowering.
That 1 response was correct and you get stroppy.c'mon, 23 views and only one respond... sad... R.I.P.