Nitrogen (N)
Used in large quantities by aquatic plants, Nitrogen is one of the three main nutrients (called macro nutrients) central to plant growth. It is usable by aquatic plants in the form of Nitrate, Ammonium and Urea.
Nitrogen is one of the most basic and critical building blocks of plant protein, and is crucial for production of chlorophyll, nucleic acids and plant hormones. It is the macronutrient that is absorbed in the largest amounts by aquatic plants.
Uneaten food, animal waste and plant rests release ammonium, and filter bacteria convert it to nitrate. However, in tanks with low to medium bio-load and reasonable plant mass nitrogen typically needs to be supplemented with fertiliser. This is especially true in high-tech aquariums.
Nitrogen supply can be limited to reduce chlorophyll production, enhancing red colouration in some plants. However, this method is potentially dangerous as

INSTRUCTION: Dosage rate for 100L Tank
SHAKE WELL BEFORE USE
Use 1 pump (2ml) per 100L, 3x per week with 50% weekly water change. 
• For HIGH LIGHT tanks with injected CO2, dense plant mass and good flow - instead use 3 pumps per 100L, 3x per week (maximum dosage) with 50% weekly water change.
• For LOW LIGHT tanks, dose the normal amount but only 1-2 times per week.'
​*Amounts above are for reference only. Your planted aquarium may need more or less depending on many factors
WARNING: 3 PUMPS PER 100L IS THE MAXIMUM DOSAGE. DO NOT OVERDOSE