i wouldn't use the dolomite, i used it before and i only have bad experiences to share. just buy a good ph balanced soil like fox farm and forget the dolomite. if you insist of using it, only used 1/4 cup or less for 1.5cf of dirt. the solution for the ph meter is worth it, it keeps your ph meter working and also it keeps it more accurate, you need the solution, plus its cheap and it last a very long time. if you already have problems with low ph, its fine to use the dolomite. next time buy good soil

. good luck bra.