Easy-Life Fosfo are used to compensate for a deficiency of nitrogen (N) and phosphorus (P), respectively. A deficiency of these macronutrients immediately leads to faltering growth or even to growth arrest.
A shortage of Nitrogen and Phosphorous can quickly arise in planted aquaria that contain very few fish or no fish at all, because very little or no fish feed is used.
Together with fish excrement, fish feed is the most important source of Nitrogen and Phosphorous. A deficiency can also arise in aquaria with a very high density of plants. Easy Life Fosfo (which contains phosphate PO4) immediately helps compensate for Nitrogen deficiencies.
The Redfield ratio is usually used to decide on the correct ratio between nitrate (NO3) and phosphate (PO4).