We just went to 12/12 using coco premix.
Ph from our tap is 7.3, after adding nutes, it's about 6.4.
Run off is at 7.1, I know I need to add ph down, but is it just math?
I mean if the run off is 7.1 and the nutes are at 6.4. And I need make the nutes at 5.7 I get the run off to be 6.4...