Because it does not contain phosphates it is ideal for the planted aquarium, where excess phosphate could contribute to undesirable algae growth.
To lower pH, use 2 g (1/4 teaspoon) to every 80 L (20 gallons*) daily until intended pH is reached (this dose lowers alkalinity by about 0.2 meq/L (0.6 dKH)). Best if added directly to aquarium. If water is soft or not well buffered, use with Alkaline Buffer™ . TIPS: Larger doses may be required in very hard (KH) alkaline waters.
It is compatible with Discus Buffer™, Neutral Regulator™, and Alkaline Buffer™. It may be used to safely lower pH in marine water. A 250 g bottle treats 800 gallons.