My Profile Tim Sparke Tim Sparke is the CEO at 4pumps.com, Australia's largest online pump supplier. For several years, he has been an active advocate of organic farming and sustainability. He has a passion for writing and is responsible for writing the 4pumps blog. person About create Posts comment Comments Reduce, Reuse, Recycle with Rainwater Harvesting5 Green Ways Water Can Boost Your Home's Value5 Organic Fertilizers Your Plants Will Love