Professional, easily absorbable nitrogen fertilizer for aquatic plants. Nitrogen is one of the most important macronutrients that plants need. The presence of nitrogen affects plant growth, reproduction and green coloration of leaves. A good supply of nitrogen is essential, as both a deficiency and an excess can be harmful to plants. Nitrogen deficiency causes growth retardation, chlorosis and yellowing of the leaves and further browning. The excess, on the contrary, is manifested by excessive growth, dark green leaves, while the plant is very delicate and less resistant to mechanical damage. The correct nitrate level in the plant aquarium should be 10-20 mg/l. Nitrogen is mainly absorbed by plants in the form of nitrate and ammonium. AF N Boost contains mineral nitrogen forms that are well absorbed by aquatic plants.