2HR Aquarist APT 1/Zero is a specially formulated liquid fertiliser for aquarium plants, optimised for tanks with little or no nitrate and phosphate supply. 2HR Aquarist APT 1/Zero is particularly suitable newn tanks (Dosage 2HR Aquarist APT 1/ZeroDose 3ml per 100L daily. Standard 300 ml Pack comes with a calibrated pump - 1ml per press.Liquid inorganic macronutrient fertiliserNPK (Mg) fertiliser with micronutrients and trace amounts of Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn)7% Total Potassium oxide (K2O)1.4% Magnesium oxide (MgO)0.09% Total Iron chelated by EDTA, DTPA and EDDHAAll nutrients are completely water solubleIngredients: Potassium sulphate (CMC1 CAS n7778-80-5) Potassium chloride (CMC1 CAS n7447-40-7)Magnesium sulphate (CMC1 CAS n7487-88-9)