Botanicare Hydro Bloom 2 3 5 5Gal 20L Wall Fans & Others It’s built to last using It’s built to last using quality components and precision electronics with an accuracy of + 2% The combination of fibrous Sphagnum peat moss and a high percentage of coarse perlite makes this formulation ideal for growers who require a growing medium product that is adapted to their needs for watering flexibility and crop seasonality The ID trays maintain Botanicares standard inside dimensions for maximum growth space and are composed of durable white ABS plastic The ID trays now include a 7 in deep seat that accommodates larger root masses