Brightwell Reef Biofuel Liquid 17 oz. 500 ml
High-purity, magnesium-rich mineral designed for use in traditional calcium reactors or blended into aquarium substrata to gradually increase and maintain magnesium concentration in the system.
Magnesium helps regulate the balance between calcium and carbonates in aquarium water and is a key component of aragonite, the mineral secreted by reef-building organisms to form skeletal material.
Composed of magnesium, calcium, and carbonates. Optimal average particle size for use in media reactors and calcium reactors. Free of chloride and sulfate. Mined in the United States. Solid Royal Item Number: ABABIO500
| Specification | Value |
|---|---|
| Volume | 17 oz (500 ml) |
| Composition | Magnesium, calcium, carbonates |
| Chloride Content | Free |
| Sulfate Content | Free |
| Origin | United States |
FAQ
Can this product be used directly in a reef aquarium without any mixing?
Yes, it can be added directly to the aquarium water or blended into the substrate. For best results, it is recommended to use it in a calcium reactor or media reactor to ensure gradual and stable magnesium levels.
Is this product safe for use with coral species?
Yes, this product is formulated to support reef health and is safe for use with coral species that require stable magnesium and calcium levels.
Does this product contain any additives or impurities?
No, it is free of chloride and sulfate. It contains only magnesium, calcium, and carbonates as active components.

Austin Buckland –
Used this in my reef tank for three months and noticed a steady improvement in coral coloration and growth. The magnesium levels stayed balanced without any spikes or drops. Easy to add and works well with my existing calcium reactor.
Stephanie Davies –
Good product, consistent magnesium levels in the water. I mixed it into the substrate and saw better skeletal development in my soft corals. No issues with compatibility or stability.
Paul Avery –
Highly effective for maintaining magnesium balance. The liquid form is easy to dose and integrates smoothly into my daily maintenance routine. No side effects observed in fish or invertebrates.