How long or how many applications of the John & Bobs system are required to modify soil PH to neutral?
There’s no exact time that can be calculated for adjusting PH back to neutral because there are too many associated variables and complexities. The best and fastest way to improve and maintain optimum PH levels is by building and maintaining micro-biologically active soil. Simply put: applications every six months gradually move the PH in the right direction and this can be verified with regular soil testing.