ACID - A safe, effective and long lasting way to lower the pH of any aquatic system. Improves the water quality for fish that prefer acid conditions, e.g. Discus, Rasboras. pH should be monitored with a pH test kit between 5 and 9. A single dose normally lowers the aquarium water to 6.5, however this is governed by hardness in the water and is only a guideline.
