Seachem Replenish is high quality blend of salts that have been scientifically designed to replenish essential minerals and general hardness levels that have been depleted through the processes of reverse osmosis and deionizing filtration. Using a balance of soft (sodium and potassium) as well as hard (calcium and magnesium) salts, this mixture restores mineral content that otherwise would result in osmotic shock, which can lead to the untimely death of your aquatic pets. Comes in a 500 ml container.
Add 5 mL (1 capful) of Replenish to 40 L (10 US gallons) of aquarium water to raise the GH (general hardness) by 1 meq/L (2.8 dGH). The suggested restoration level to be put into DI or RO water is 1-2 meq/L which is 5 mL of Replenish per each 20-40 L (5-10 US gallons) of aquarium water.