Hey 181,
No, this flush comes in hardwater or softwater. It is vital you get the correct one as it's already balanced our end for you to just run through your system WITHOUT any ph adjustment

I see you're in soil, unfortunately this product doesn't really do an awful lot of good in compost / soil but works extremely well in coco or hydro

e2a: If your stockist doesn't list softwater on their website try giving them a ring, I am sure they carry stock