JBL Proscape NPK Macroelements 250 mlAdditional care for plants: supplementary fertiliser with 3 components (N = nitrogen; P = phosphorus; K = potassium) for aquascaping aquariums. Dosing is dependent on intensity of illumination, CO2 supply and consumption. Thriving plant growth, prevents deficiency symptoms: contains nitrogen as nitrate, phosphorus as phosphate, potassium and magnesium for a controlled and precise increase of the values. Iron and trace elements should be added