Phosphate-free preparation for safely lowering the pH value. Any pH influence must be checked with a pH test. With natural oak extract. Before use, the KH should be checked and adjusted to 4 - 8° dKH. (with JBL AquaDur). Before manipulating the pH value, you should look into this topic in more detail. There are three ways to lower the pH value: by adding CO₂ (carbon dioxide), with the help of JBL pH-Minus or with active peat (JBL TorMec activ), with peat having the weakest effect. It is always very important to determine the KH (carbonate hardness) beforehand, as it stabilizes the pH value! If the KH is below 4 °dKH, the pH value is so unstable that the slightest addition of pH minus or CO₂ can lead to serious problems.
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