Additional care for plants: supplementary phosphorus fertiliser for aquascaping aquariums Use for high power light aquarium: 2 ml/100 l, for weakly lighted aquariums: 1 ml/100 l Thriving plant growth, prevents phosphorus deficiency: contains additional plant-available potassium Checking of dosage with JBL phosphate test sensitive Package contents: 1 bottle ProScape P Macroelements. Example of use: 2 ml/100 l daily in high power light aquariums with CO2; 2 ml/100 l weekly under weak light conditions without CO2