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GodBud Reviewed by GodBud on . Need Guidance on Ph issue Quoted from Site Adjusting pH Of Marijuana Grown In Soil A good way to stabilize soil is to use dolomite lime (calcium-magnesium carbonate). Dolomitic lime acts slowly and continuously, so soil will remain pH stable for a few months. Using fine size dolomite lime is important, coarser grades can take a year or longer to work. You can find fine size dolomite lime at any well stocked garden supply center. Dolomite lime has been used by gardeners as a pH stabilizer for many years. It Rating: 5