Seachem Liquid Marine Buffer will safely raise marine pH to 8.3 while adjusting alkalinity. It will not raise pH above 8.3 even if inadvertently overdosed. Seachem Liquid Marine Buffer contains a balanced blend of bicarbonate, carbonate and borate salts designed to raise pH and restore disrupted buffer systems to the proper balance. Use Seachem’s MultiTest Marine pH & Alkalinity to check pH and total alkalinity. Use Seachem’s Marine Trace to restore the proper level of trace and feed Seachem’s NutriDiet Marine Flakes for thriving, healthy saltwater fish. Seachem Liquid Marine Buffer shares the same blend as Seachem’s Marine Buffer powder and confers the same benefits. It is a blended buffer that drives and holds your pH at 8.3 because of the blend. The pK of Seachem Liquid Marine Buffer is actually slightly higher than 8.3 in order to combat the influx of bicarbonate at every water change.