Reef Builder&Trade; Raises Carbonate Alkalinity Without Immediately Impacting On Ph. With Long Term Use There Will Be A Tendency To Stabilize At Ph 8.3. Used As Directed, Reef Builder&Trade; Will Not Deplete Calcium, Magnesium, Or Strontium Which Usually Tend To Precipitate With Increasing Alkalinity. Reef Builder&Trade; And Reef Buffer&Trade; May Be Used Together. Use Reef Builder&Trade; To Raise Carbonate Alkalinity Without Affecting Ph. Use Reef Buffer&Trade; To Raise Carbonate Alkalinity And Ph. Reef Alkalinity Should Be Maintained At 3&Ndash;5 Meq/L (8&Ndash;14 Dkh). Alkalinity Should Not Be Allowed To Fall Below 2 Meq/L.