Ph change during flower phase??

[stonyjones]

i was hopeing someone can shed some light on Ph incressing from 6.2veg to-flowering @ 6.5>6.8 i have read different methods does the ph incress help with the flowering nutriant intake during this phase and if so how does the plant avoid lockup:rastasmoke:

[Rubberbubbler]

If growing in soil 6.3-6.8 is within acceptable range.