pH Up raises the pH of Aquarium Water and contains no phosphates.
For freshwater aquarium use only.
Directions For Use:
1. Use API’s Freshwater pH Test Kit to determine the pH of the aquarium. 2. To raise pH, add 1/2 tsp (2.5 ml) for each 25 U.S. gallons. For larger aquariums add 1 tsp. (5 ml) for each 50 U.S. gallons. 3. Take another pH reading before making the next addition of pH Up. 4. If fish are present in the aquarium, do not change the pH more than 0.2 in a 24 hour period (for example, from 7.0 to 7.2).