Brightwell Aquatics Alkalin8.3 KH Buffer, 2 liter is a highly-effective alkalinity(KH)-increasing ("buffer") solution
Helps increase pH stability in an aquarium by raising the alkalinity
Provides a source of carbonates, which make up the majority by
weight of aragonite, the mineral secreted by reef-building organisms
as skeletal material
Continued addition raises pH until 8.3 is reached, at which point
the pH remains unchanged and the alkalinity alone increases