Seachem Flourish Phosphorus – Potassium Phosphate Supplement (250ml)

Seachem Flourish Phosphorus is a premium-grade phosphorus supplement for freshwater planted aquariums. It contains a safe 4,500 mg/L solution of potassium phosphate, allowing aquarists to dose phosphorus independently of nitrogen. This is especially useful in systems where nitrate levels are already sufficient or where precise nutrient control is required.

Phosphorus is one of the three essential macronutrients (NPK) needed for healthy plant growth. In low-nutrient or high-demand tanks, phosphorus can become a limiting factor, leading to stunted growth and dark green or deteriorating leaves. Flourish Phosphorus corrects this deficiency without encouraging algae growth when used as directed.

Key Features:

– 4,500 mg/L phosphate from potassium phosphate
– Nitrate-free formula for precise nutrient control
– Enhances plant growth without promoting algae
– Safe for shrimp and other invertebrates
– Works best when used with Seachem Flourish Nitrogen and Potassium

Product Specifications:

Brand: Seachem
Volume: 250 ml
Form: Liquid
Country of Origin: United States

Directions for Use:

Use 2.5 mL (half a cap) for every 80 L (20 US gallons) once or twice a week, or as needed based on plant response. This dose raises phosphorus by 0.05 mg/L (0.15 mg/L phosphate). Use Seachem MultiTest™ Phosphate to monitor levels. Ideal phosphate range: 0.15–1.0 mg/L.