• Highly-effective alkalinity increasing (“buffer”) powdered blend.
• Helps increase pH stability in an aquarium by raising the alkalinity; continued addition raises pH until 8.3 is reached, at which point the pH remains unchanged and the alkalinity alone increases.
• Provides a source of carbonates, which make up the majority by weight of aragonite, the mineral secreted by reef-building organisms as skeletal material.
• Formulated by a marine scientist.
• Available in 200g, 500g, 1kg, 4kg, and 20kg sizes.

Alkalinity, also referred to as carbonate hardness or buffering capacity, is essentially a means of quantifiying the stability of pH in a solution, such as aquarium water. In an aquarium, weak acids formed by oxygen respiration and the decomposition of organic material gradually deplete alkalinity. If left unchecked, the alkalinity drops below a critical level and pH begins to fluctuate more wildly than is normally suggested, causing stress to livestock.