Product Details

  • Liquid Phosphorus supplement for the planted aquarium
  • A safe 4500 mg/L solution of potassium phosphate
  • Nitrate free
  • Helps plants to grow but not algae

Seachem Flourish Phosphorus

Seachem Flourish Phosphorus is a nitrate-free product that provides essential Phosphorus to enhance and accelerate the growth of aquatic plants. Being nitrate-free, it does not cause algae growth. Grow your plants, not the algae!

Phosphorus is one of the main three macro nutrients (nitrogen, phosphorous, potassium: NPK) required by plants and can often become the limiting factor to growth in a flourishing system.

Liquid Supplement

Seachem Flourish Phosphorus is a safe liquid supplement containing 4,500 mg/L phosphate of potassium phosphate. It simply takes the guess work out of phosphate dosing.

Unlike competing products that mix nitrate and phosphate in a fixed ratio, Seachem Flourish Phosphorus (being nitrate free) allows you to dose phosphorus according to the needs of your plants without the risk of overdosing nitrates.

For maximum benefit, use with Seachem Flourish Nitrogen and Seachem Flourish Potassium.

Seachem Flourish Phosphorus is safe for invertebrates such as shrimp.

Benefits of Seachem Flourish Phosphorus

  • Safe concentration (4,500 mg/L phosphate)
  • Nitrate free
  • Safe for invertebrates such as shrimp
  • Enhances and accelerates the growth of aquatic plants
  • Does not trigger algae growth


Amounts per 1 g:

  • Available Phosphate (P2O5) 0.3%
  • Soluble Potash (K2O) 0.2%

Derived from: Potassium phosphate


SGD 25.90


Delivery takes 3 to 7 working days. Delivery fees will be shown upon checkout.


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