For lowering the pH/GH of water 100 ml
· Phosphate-free preparation for lowering the pH level of water. Any pH influence should be tested with a pH test.
· Contains wood extract
· Before use, GH should be checked and adjusted to 4-8º dGH (GCH)
· To check the limestone content of stones (add a few drops of pH-Minus onto the stone: the formation of foam indicates the presence of limestone)
