Reduces water changes. Maintains water chemistry & pH. For all freshwater aquariums. Maintenance: use weekly. Proprietary formula provides safety net between water changes. As aquariums age, their water chemistry changes. EasyBalance prevents harmful conditions caused by these changes. Regular use helps to maintain a healthy aquarium. Regulates pH and alkalinity (KH) at recommended levels. Adds the vitamins, minerals and electrolytes needed for vibrant active fish. Reduces phosphates. Note: EasyBalance is not a tap water conditioner and will not neutralize chlorine. When adding tap water to the aquarium it is recommended you always use Tetra AquaSafe. Treats 100 gallons/380 liters. Made in Germany.