JBL pH-MinusContains a natural oak extract.
Reduce pH-Level of water. The total alkalinity or KH (Carbonate hardness) should be checked and adjusted to 4 - 8° dKH prior to use.
Before changing the pH-value, it is advisable to address the issue. The pH level can be lowered by adding CO2 (carbon dioxide), by means of JBL pH-Minus. It is always most important to determine the KH (carbonate hardness) which stabilizes the pH-value in advance. With a KH under 4 °dKH the pH-value is so unstable, that the slightest amounts of pH-Minus or CO2 can lead to serious problems.