Seachem ReplenishReplenish restores General Hardness (GH) using a balanced blend of both soft (sodium, potassium) and hard (calcium, magnesium) salts. Features: Restore and maintain GH Replenishes necessary minerals removed by RO DI Necessary to prevent osmotic stress and osmotic shock Directions: Add 5 mL (1 capful) Replenish to 40 L (10 US gallons) to raise GH by 1 meq L (2. 8 dGH). Recommended restoration level into DI or RO water is 1 to 2 meq L which is 5 mL per