Genesys SI has been developed as an antifoulant for use in Reverse Osmosis and Nano-filtration systems operating on high silica feed waters. Genesys SI is also effective against all common scale forming salts such as calcium carbonate, calcium, barium and strontium sulphate. By reducing silica fouling and inhibiting all forms of scaling, Genesys SI allows OEMS to design systems that can operate at higher recovery rates, reducing the amount of feed water used and the volume of concentrate to be discharged. Consequently, significant savings can be made in capital and operational costs.