API® PROPER pH 6.5 automatically sets and stabilizes pH at 6.5, and also works to remove chlorine and detoxify heavy metals. It works best with Tetras, Discus, and Angelfish, and contains electrolytes to reduce fish stress.

It may be used when setting up an aquarium, or when changing water.

Add 1 scoop for every 10 gallons of aquarium water.
Repeat dose when pH test indicates a pH change of more than 0.2.