Encourage your grass to grow thicker, greener and healthier with Pro-Kleen Premium Iron Sulphate 2.5kg. It is an iron-rich, long-lasting fertiliser that keeps your grass luscious and strong all year round! It greens grass, hardens turf, and also leaves the soil slightly more acidic to improve the quality of your lawn. Note: One 2.5kg tub of Pro-Kleen’s Iron Sulphate makes up to 2500L when diluted and covers up to 2500m2 grass greening and 1500 square metres for turf hardening! Instructions for usage including suggested dosages for grass greening are on the back of each tub!