Need more info. ESPECIALLY your medium. If you just
flush your plant with ph 8 or so water until your run off hits about 6-6.5
and you're in soil...great. If you're in coco, you're hosed. Coco's ph range is different from soil's.

Also, there is a reason it's nose diving. If you don't find out what that is and fix it, you're gonna be back here in two weeks asking the same thing.
sergentjunk Reviewed by sergentjunk on . PH Help!!! Hey, so I just checked the PH of my run off water and it was at about 4.5, what do i do? I have PH UP, but idk how much to add. Please Help, ASAP. Rating: 5