Flourish Nitrogen is a concentrated (15,000 mg/L) blend of nitrogen sources specifically designed for the planted aquarium. Nitrogen is one of the three primary macro-nutrients (NPK) required by plants, and a deficiency can lead to stunted growth and chlorosis (yellowing) of older leaves. This supplement provides nitrogen in both nitrate and ammonium forms, allowing plants to access this vital element through their preferred biological pathways.
Flourish Nitrogen is uniquely formulated to provide immediate and long-term nutrient availability without the risk of ammonia toxicity.
Nitrate & Ammonium Blend: Provides nitrogen in the form of nitrate and urea-bound ammonium, mimicking natural nutrient availability.
No Free Ammonia: The ammonium in Flourish Nitrogen is chemically bound, making it safe for fish and invertebrates while remaining easily accessible to plants.
High Concentration: A powerful 15,000 mg/L formula that allows for precise dosing in tanks of all sizes.
Growth Acceleration: Directly addresses nitrogen deficiency to promote lush, green foliage and rapid plant development.
Phosphorus-Free: Allows you to manage nitrogen levels independently without accidentally spiking phosphate levels.
When should I use Flourish Nitrogen? Use this supplement if your plants show signs of nitrogen deficiency (yellowing leaves, small new growth) or if your nitrate tests consistently read near zero.
Will this cause an ammonia spike in my tank? No. Because the ammonium is in a complexed urea form, it does not release free ammonia into the water column, making it safe for livestock when used as directed.
Can I use this with other Flourish products? Yes, Flourish Nitrogen is designed to be used as part of a comprehensive plant care routine alongside Flourish Phosphorus and Flourish Potassium.
Seachem Flourish Phosphorus: The ideal partner for managing the "P" in your NPK macro-nutrient balance.
Seachem Flourish Potassium: Complete your macro-nutrient regime to ensure strong stem and root development.
Seachem Flourish Tabs: Provide long-term root fertilization to supplement the liquid dosing of Flourish Nitrogen.
