Liquid 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, and detoxifying ammonia. The use of Liquid Neutral Regulator? makes other conditioning unnecessary. To lower pH below 7.0 use Liquid Directions Use 1 capful (5 mL) for every 10 L (2.5 US gallons) once or twice a month (or as necessary to maintain a pH of 7.0). Liquid Neutral Regulator? may be added directly to the aquarium at any time. Very hard water may require a double or triple dose. Contains phosphate buffers and conditioning agents. Safe for all freshwater fish acclimated to neutral pH.