I need help please

[Bbc5272]

6 weeks into flower and I have this . I moved my lights up a bit thinking it may be light burn . Soil ph is 5.2 . I did flush Friday and fed this morning with mega crop. Took ph at soil and 5.2 still . Is this OK for soil ph or should it be up at 6 ?
Any suggestions would be great . First grow and rounding third and headed for disaster it looks like . Thanks a bunch in advance.

 

[growsince79]

You could add lime but it's probably too late to do much. I'd just give em water until harvest.

 

[Dirtbag]

They look overfed. Probably why the soil is acidic. Agree, just plain water, and could probably use a rinse.