Seachem Flourish Nitrogen

Nitrogen is a crucial macronutrient—one of the primary three (nitrogen, phosphorus, potassium: NPK)—essential for healthy plant growth and often a limiting factor in flourishing aquatic systems. This concentrated formula delivers nitrogen at 15,000 mg/L through a balanced blend of nitrate and plant-preferred ammonium forms. Importantly, no free ammonia is released, as the ammonium is complexed and only becomes available when utilized by plants. This dual nitrogen source supports a wide range of aquatic plants, catering to those that prefer ammonium as well as those that readily absorb nitrate.

For optimal results, use this nitrogen supplement alongside complementary phosphorus and potassium products to ensure a complete nutrient profile for your aquatic plants. Nitrogen deficiency symptoms such as stunted growth and chlorosis can be effectively addressed by regular dosing.

Directions for Use:
Beginner users can apply 2.5 mL (approximately half a cap) per 160 L (40 gallons) twice weekly or as needed based on plant health. Each cap thread corresponds to roughly 1 mL for precise dosing. Advanced users can calculate dosage with the formula: 0.25 × tank volume (gallons) × desired nitrogen increase = volume of product (mL). For example, to raise nitrogen by 0.20 mg/L in a 20-gallon tank, use 1 mL of product. Since half the nitrogen is nitrate, doubling a nitrate reading offers an approximate total nitrogen level. For precise measurement, specialized total nitrogen tests are recommended.

Frequently Asked Questions:
Is ammonium the same as ammonia, and is it harmful?
No free ammonia is released; the ammonium is complexed and safe, becoming available only to plants.

Why include both nitrate and ammonium forms of nitrogen?
Studies show most aquatic plants prefer ammonium, but some benefit more from nitrate. This blend ensures broad effectiveness.

Does adding nitrates promote unwanted algae growth?
Excess nitrogen beyond plant requirements can fuel algae, but nitrogen is vital for healthy plant growth. Use this supplement to correct deficiencies, not to oversupply nitrogen.