Neutral Regulator™ adjusts pH to neutral (pH 7.0) from either a low or high pH and maintains it there. It softens water by precipitating calcium and magnesium while removing any chlorine, chloramine, or ammonia. The use of Neutral Regulator™ makes other conditioning unnecessary. To lower pH below 7.0 use Neutral Regulator™ with Acid Regulator™ (or Discus Buffer™). To raise pH above 7.0 use with Alkaline Regulator™. All of these products will enhance and stabilize the freshwater aquarium environment. Use Fresh Trace™ to restore the proper level of trace elements required by thriving, healthy freshwater community fish. DIRECTIONS: Use 1 measure (supplied) to every 4 L (1 gallon*) once or twice a month (or as necessary to maintain a pH of 7.0). Neutral Regulator™ may be added directly to the aquarium at any time. Ideally, it should be used when adding or changing water by dissolving in the replacement water.