The best possible pH value for keeping most freshwater fish and plantes is the neutral range around 7.
JBL pH-Minus lowers excessively high pH values in your aquarium and promotes fish health via added natural oak extract.

• phosphate-free preparation to reduce the pH level. Any variation in the pH level should be checked with a pH test.
• The CH should be checked before use and adjusted to 4-8° dCH.(using JBL AquaDur plus).
• To test the lime content of stone add a few drops of Aquacid to the stone. The development of foam indicates the presence of lime.

Dosage:
pH value above 8: inside screw top sufficient for 30 litres of aquarium water
pH value between 7 and 8: outside screw top sufficient for 30 litres of aquarium water
pH value below 7: do not add JBL pH-Minus

Package content: 100 ml (for 400 liter water)