Red Sea NO3:PO4-X Nitrate & Phosphate Reducer 5L

$199.00

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The Red Sea NO3:PO4-X 5 Litre is a highly effective biological nutrient control solution, designed to reduce nitrate (NO3) and phosphate (PO4) levels in reef aquariums. By carefully lowering excess nutrients, this treatment helps prevent nuisance algae, promotes vibrant coral coloration, and supports strong coral growth.

Excess nitrate and phosphate are common problems in marine aquariums, leading to poor water clarity, algae blooms, and stressed corals. NO3:PO4-X provides a controlled method of nutrient reduction by encouraging the natural growth of beneficial bacteria that consume nitrates and phosphates as part of their metabolism. These bacteria are then removed by protein skimming, effectively reducing nutrient concentrations without harming your reef inhabitants.

Unlike harsh chemical removers, Red Sea NO3:PO4-X works gradually and safely, ensuring stability for sensitive corals and invertebrates. It also supports balanced ratios between nitrate and phosphate, preventing the swings that can lead to imbalances in coral nutrition.

This 5L bottle is ideal for large reef systems or long-term use, offering excellent value for aquarists who want a reliable method of nutrient control.

Key Features:

  • Size: 5 Litre (nitrate & phosphate reducer)

  • Biologically reduces NO3 & PO4 levels safely

  • Improves water clarity and prevents algae growth

  • Enhances coral coloration and skeletal development

  • Safe for long-term reef aquarium use

Keep your reef healthy, balanced, and algae-free with Red Sea NO3:PO4-X 5 Litre — the proven solution for nutrient control in marine aquariums.


The Red Sea NO3:PO4-X 5 Litre is a highly effective biological nutrient control solution, designed to reduce nitrate (NO3) and phosphate (PO4) levels in reef aquariums. By carefully lowering excess nutrients, this treatment helps prevent nuisance algae, promotes vibrant coral coloration, and supports strong coral growth.

Excess nitrate and phosphate are common problems in marine aquariums, leading to poor water clarity, algae blooms, and stressed corals. NO3:PO4-X provides a controlled method of nutrient reduction by encouraging the natural growth of beneficial bacteria that consume nitrates and phosphates as part of their metabolism. These bacteria are then removed by protein skimming, effectively reducing nutrient concentrations without harming your reef inhabitants.

Unlike harsh chemical removers, Red Sea NO3:PO4-X works gradually and safely, ensuring stability for sensitive corals and invertebrates. It also supports balanced ratios between nitrate and phosphate, preventing the swings that can lead to imbalances in coral nutrition.

This 5L bottle is ideal for large reef systems or long-term use, offering excellent value for aquarists who want a reliable method of nutrient control.

Key Features:

  • Size: 5 Litre (nitrate & phosphate reducer)

  • Biologically reduces NO3 & PO4 levels safely

  • Improves water clarity and prevents algae growth

  • Enhances coral coloration and skeletal development

  • Safe for long-term reef aquarium use

Keep your reef healthy, balanced, and algae-free with Red Sea NO3:PO4-X 5 Litre — the proven solution for nutrient control in marine aquariums.


Red Sea NO3:PO4-X Nitrate & Phosphate Reducer 5L
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