Seachem Flourish Nitrogen 250mL provides a concentrated source of nitrogen in both nitrate and ammonium forms, making it immediately available for aquatic plants. Nitrogen is a primary macronutrient required for strong growth, lush green colour, and proper plant development.
In lightly stocked tanks, heavily planted aquascapes, or high-light CO₂ systems, nitrogen can be depleted quickly — leading to pale leaves and stalled growth.
What It Helps Fix
✔ Yellowing older leaves (starting from the bottom)
✔ Stunted or slow growth
✔ Thin or weak stems
✔ Reduced plant mass
✔ Lack of rich green colour
How You Know You Need It
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Your tank is lightly stocked
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You run strong lighting or injected CO₂
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Nitrate tests consistently read very low
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Plants appear pale despite dosing other nutrients
Nitrogen deficiency is one of the most common nutrient limitations in modern planted tanks.
Dosage
Standard Dose: 2.5mL per 160L raises nitrogen by approximately 1 mg/L
Dose 1–2 times per week or as required based on nitrate testing and plant response. Adjust gradually to maintain stability.
For maximum benefit, use with either Flourish Phosphorus or Flourish Potassium to maintain balanced macronutrient levels.
For thicker growth, deeper green leaves, and balanced nutrient dosing, Seachem Flourish Nitrogen 250mL is a core part of any serious planted aquarium fertiliser routine.
