can somone give my some help before this get out of control

raising the ph of the water to 6.4, how long do you think 'til i'm in the clear ??? i know the leafs wont come back but i shouldnt see any more right

Ok its been almost 2 weeks and there are no signs of improvment, Ive been feeding at 6.4 ph and 1300 ppm. any other suggestions ???? I'm at week 4 and need this fixxed now