Aqua Light - MgSO4 . 7H2O, Magnesium sulphate 1000ml

- High purity

To make a typical stock solution add 160g of dry MgSO₄ to 1000ml of RO or distilled water. Of this solution add once a week 50ml per 100L of aquarium water.
This will give you approximately 10ppm (10mg/l) of Magnesium.

Keep out of the reach of children!