Seachem Replenish 250ml is a blend of salts designed to replenish the essential minerals removed through reverse osmosis. This formula restores General Hardness (GH) by using a balanced mix of both "soft" (sodium, potassium) and "hard" (calcium, magnesium) salts. Replenishing minerals is crucial, as a complete lack of minerals can lead to osmotic stress in species whose osmoregulatory systems are adapted to a mineralized environment. Severe osmotic stress can cause osmotic shock and rapid mortality.

• Restore and maintain GH
• Replenishes essential minerals removed by RO/DI
• Essential for preventing osmotic stress and osmotic shock