Natures Footprint Coconut Husk Soil Amendment 5kg Coir Block (5 Pack) One (1) 5 kg brick (moistened) will cover a 3'x3' area to a depth of approx. 2.5" Replaces peat moss, rockwool, perlite & vermiculite Disease Resistant Holds between 8 & 10 times its volume in water Compressed bricks are easy to handle & store