Are ideal for housewifes, they are sold in large scale retail outlets in Europe and US. They can be carried as they are low in weight. This rectangular brick weighing 650 grams is either individually shrink wrapped or placed in carton boxes. The brick can be supplied with or without buyers printed labels. They are excellent for cutting, propagation, water retention, soil aeration and seed germination. Use for Potting, Seed Stating, Bulbs and Tubers. Method of Preparation: Soak the brick in a container and within minutes you can see the brick absorbing 8 - 9 Liters of water.