Seachem Reef Phosphorus - 500ml Boxfish Dose into the sump or

Dose into the sump or another high-flow area away from direct coral contact

Use case: Smaller aquariums or shorter lunar-light coverage needs

With continued and exclusive use brings "just off the reef" coloration

Microalgal Biomass: 4

1 x Seachem Acid Buffer - 600 g

Seachem Reef Phosphorus - 500ml Boxfish Dose into the sump orSeachem Reef Phosphorus 500ml Seachem Reef Phosphorus 500ml is a concentrated phosphate supplement for reef aquariums, designed to raise phosphorus levels for coral growth, macroalgae support, and balanced reef nutrient management. Seachem Reef Phosphorus for Reef Nutrient Balance Reef Phosphorus provides targeted phosphorus supplementation without adding dissolved organics, making it useful in low phosphate reef systems where coral growth,