Brightwell Aquatics Alkalin8.3-P Powdered Alkalinity Buffer for Reef Aquariums – Regulates pH to 8.3, Promotes Aragonite Growth, Free of Phosphate & Additives, 1000g

Brightwell Aquatics Alkalin8.3-P is a precision-formulated powdered buffer designed to raise alkalinity (KH) and stabilize pH to 8.3 in reef aquariums. Unlike basic one-part buffers, this multi-component blend gradually adjusts water chemistry for improved consistency and reduced stress on livestock. It provides a rich source of carbonates—the primary building blocks of aragonite—for reef-building corals and invertebrates. Regular use supports stronger coral skeletons, helps prevent dangerous pH swings, and compensates for alkalinity depletion caused by respiration, coral calcification, or salt mixes with poor buffering. Each gram increases alkalinity in 1 gallon by 12 dKH, making it ideal for large or heavily-stocked systems. Alkalin8.3-P dissolves cleanly without clouding and does not introduce unwanted phosphate, nitrate, or silicates. It can also be used in systems where CO2 buildup depresses pH. This advanced buffer is especially effective when used alongside Brightwell’s Boost pH+ to improve surface exchange and combat low pH environments. Whether you're dosing to maintain stable parameters or correcting imbalances, Alkalin8.3-P offers reef aquarists unmatched control and performance.