Seachem 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, coloration, or macroalgae performance may be limited by depleted phosphorus levels. Phosphate Supplement Benefits for Coral Growth Provides phosphorus support for reef aquariums. Helps support coral growth, coloration, protein synthesis, and macroalgae growth. Raises phosphate without adding dissolved organics. Useful in low-nutrient systems where phosphate is consistently depleted. Can be paired with Seachem Reef Nitrogen to help balance nitrogen and phosphorus availability. Seachem Reef Phosphorus Dosing Details Product type: Reef phosphate supplement Primary use: Phosphorus and phosphate support in reef aquariums Concentration: 3,500 mg/L phosphate Suggested phosphate range: Generally 0.02 to 0.05 mg/L phosphate Beginner dose: 2.5 ml per 160 L (40 US gallons) once weekly Expected increase: About 0.05 mg/L phosphate per beginner dose Package size: 500 ml Directions for Seachem Reef Phosphorus Use 1/2 capful or 2.5 ml per 160 L (40 US gallons) once per week, or as needed to maintain desired phosphorus levels. Test phosphate regularly and raise levels slowly over several days if phosphate is very low. For more precise adjustment, calculate dosage based on aquarium volume and desired phosphate increase, then monitor coral response and nutrient balance. What's Included 1 x Seachem Reef Phosphorus - 500 ml
