Brightwell Reef Biofuel Liquid 17 oz. (500 ml)
High-purity, magnesium-rich mineral designed for use in traditional calcium reactors or blended into aquarium substrates to gradually increase and maintain magnesium concentration in reef systems.
Provides essential magnesium, which helps regulate the balance between calcium and carbonates in aquarium water. Magnesium is a key component of aragonite, the mineral secreted by reef-building organisms to form skeletal material.
Composed of magnesium, calcium, and carbonates. Features optimal average particle size for use in media reactors and calcium reactors. Free of chloride and sulfate. Mined in the United States.
| Specification | Value |
|---|---|
| Volume | 17 oz (500 ml) |
| Key Components | Magnesium, Calcium, Carbonates |
| Free From | Chloride, Sulfate |
| Origin | United States |
| Item Number | ABABIO500 |
FAQ
Can this product be used directly in a calcium reactor?
Yes, it is suitable for use in traditional calcium reactors and can be added to maintain optimal magnesium levels.
Is it safe to mix this liquid with existing aquarium substrates?
Yes, it can be blended into pre-existing substrates to gradually increase magnesium concentration over time.
Does this product contain any harmful additives?
No, it is free of chloride and sulfate, and contains only magnesium, calcium, and carbonates.

Mary Hamilton –
Used this in my reef tank for three months. Water chemistry has stabilized, and my corals are showing better growth. The magnesium levels are consistent, and it integrates well with my existing calcium reactor.
Olivia Roberts –
Good product, easy to mix. I added it to my substrate and noticed a steady improvement in magnesium readings. Works well with my reef setup and doesn’t cause any water fluctuations.
Cameron Mathis –
Highly recommended for reef keepers. The magnesium balance has improved significantly since using this liquid. No issues with compatibility or water parameters.