Stein's oak extract lowers the pH value in your aquarium water. So that you can easily provide your plants and fish optimal water values. In community aquariums a pH value from 6.5 to 7.5 at a carbonate hardness of 5 -8 dKH is recommended.
Dosage Stein's Oak ExtractDo you have questions about this article ?
For 100 litres of aquarium water daily add 12 ml (= 2 screw caps) Stein's Oak Extraxct until the desired water values are reached. 6 ml of Stein's Oak Extract lowers the pH value about 0.3 - 0.5 and the carbonate hardness about 2° dCH.