Reduced frequent water changes. Keeps aquarium water biologically balanced for up to 6 months. Stabilizes pH and alkalinity (KH) levels vital for fish and plants. Reduces nitrates and phosphate. Nitrate reduction granules. A world innovation from Tetra. Regular use of EasyBalance reduces frequent water changes by keeping aquarium water biologically and chemically balanced for up to 6 months. How EasyBalance Works: Reduces phosphate levels for improved water quality. Alkalinity (KH) and pH stabilizers prevent sudden, dramatic swings in pH that can be harmful to fish. Adds the vitamins, trace elements and minerals essential for a healthy aquarium. The regular addition of Nitraban, nitrate reducing granules, to the aquarium keeps nitrate levels low. The heart and mind of water life. Treats 100 gallons/379 liters. Made in Germany.