In hydroponics, simple always beats difficult - and hydrated sure beats dry. This higher density, lower drainage foam, primarily designed for propogation of vegetative cuttings, offers greater water retention for outstanding germination and propogation of vegetables, herbs, flowers and foliage crops, with no hassle. Its cell structure is a lot like a plant's, for a perfect air-to-water balance for fast root development and optimal callus growth. And it's ready to use; just wet it and get started planting. How's that for simple?