Acid Regulator� adjusts pH to the acidic range (4.5 à 5.5) and softens water by precipitating calcium and magnesium. Acid Regulator� supports the establishment of the optimal environment for all acid acclimated species (e.g. neons and other tetras, etc.). For further freshwater environment enhancement, use Fresh Trace� to restore the proper level of trace elements required by thriving, healthy freshwater community fish.DIRECTIONS: Use 1 level teaspoon (7�g) for every 40 L (10 gallons*) daily until intended pH is reached. Thereafter, use once a month or with water changes as required to maintain pH. To raise pH, use Neutral Regulator�. To target a particular pH use in combination with Neutral Regulator� following the chart below. This chart assumes the use of unbuffered water (RO or DI). If water is already buffered use the chart as a starting guide. Use Prime� to dechlorinate tap water before d