First time grower, need some help (potentially a pH issue?)

[SpaceCadet993]

I think I am having some serious pH issues. Flushed on Monday, runoff pH was 6.5, opened my space bucket this morning to severe browning on new growth. Wanted to flip to flower next week, now not so sure.

 

[Aqua Man]

I think I am having some serious pH issues. Flushed on Monday, runoff pH was 6.5, opened my space bucket this morning to severe browning on new growth. Wanted to flip to flower next week, now not so sure.

What media, nutrients are you using?
PH in and PH out?
PPM In/Out?
Watering practices?
Light and distance?
Temps and Humidity?

 

[Kidbuu]

How much are you feeding her?