Liquid Gardens GH+ Remineralizer (250g)

GH+ Remineralizer will raise the general hardness of the water and is intended for use with RO/DI water. It contains Magnesium Sulfate, Potassium Sulfate, and Calcium Sulfate in a 1:3:3 ratio.

Directions: 3 grams per 5 gallons increases Gh by 6 degrees