Seachem Flourish Nitrogen – Nitrate & Ammonium Plant Supplement (250ml)

Seachem Flourish Nitrogen is a scientifically formulated nitrogen source for freshwater planted aquariums. It delivers nitrogen in both the nitrate (NO₃⁻) and ammonium (NH₄⁺) forms—allowing plants to absorb what they prefer most. The ammonium is complexed and safe, releasing no free ammonia into the water.

Nitrogen is one of the three essential macronutrients (NPK) required for plant growth. In low-nutrient systems or high-demand tanks, nitrogen can become a limiting factor, leading to stunted growth and chlorosis (yellowing leaves). Flourish Nitrogen corrects this safely and effectively.

Key Features:

– 15,000 mg/L nitrogen concentration
– Provides both nitrate and ammonium forms
– No free ammonia released – completely plant-safe
– Ideal for CO₂-injected and high-light aquariums
– Compatible with Seachem Flourish Phosphorus and Potassium

Product Specifications:

Brand: Seachem
Volume: 250 ml
Form: Liquid
Country of Origin: United States

Directions for Use:

Use 2.5 mL (half a cap) for every 160 L (40 US gallons) twice a week or as needed. This dose raises nitrogen by the same degree as 1 mg/L nitrate. For targeted dosing, use the formula: 0.25 × tank volume (gallons) × desired nitrogen increase = mL to dose.