Brightwell Alkalin 8.3 Liquid PH Buffer 17 oz.
High-purity, magnesium-rich mineral designed for use in traditional calcium reactors or blended into existing aquarium substrates to gradually increase and maintain magnesium concentration in the system.
Helps regulate the balance between calcium and carbonates in aquarium water and supports the formation of aragonite, the mineral secreted by reef-building organisms to build skeletal structures.
Composed of magnesium, calcium, and carbonates. Free of chloride and sulfate. Mined in the United States. Solid Royal Item Number: ABAALK500
| Component | Content |
|---|---|
| Magnesium | Present |
| Calcium | Present |
| Carbonates | Present |
| Chloride | Free |
| Sulfate | Free |
FAQ
Can this product be used directly in a reef aquarium without additional mixing?
Yes, it can be added directly to the aquarium water or blended into the substrate. For best results, mix thoroughly and follow recommended dosage guidelines.
Is this product suitable for use in calcium reactors?
Yes, it is specifically formulated for use in calcium reactors and media reactors due to its optimal particle size and mineral composition.
Does this product affect the pH of the aquarium water?
Please contact customer service

Christopher Lee –
Used this in my reef tank for three months. Water stability improved noticeably. Magnesium levels stayed consistent without needing frequent adjustments. Easy to mix and effective for maintaining calcium-carbonate balance.
Blake Mackenzie –
Good product for maintaining magnesium. Works well with my calcium reactor. No issues with water clarity or coral growth. Slightly thicker than expected, but still easy to dispense.
Gavin Nolan –
Highly recommended for reef keepers. The magnesium content helps keep my corals healthy. No signs of cloudiness or chemical imbalance after regular use.