Rock Nutrients are a world-leading product that provides you with a simple and efficient means of getting the biggest harvest ever. Rock was founded in Adelaide, South Australia and has since developed into a global brand. They provide scientifically tested products that ensure consistency, purity, and effectiveness so that our customers are assured of reliable and successful results every single grow. Hydro Experts has the best range with the lowest prices on all products. Visit in-store or order online at hydroexperts.com.au and get free delivery over $499. Only at HYDRO EXPERTS!