African Congo Root is ideal for the planted aquarium as it naturally will soften the water and has many places for your live plants to take root. The pieces are full of knots, whorls and can be fitted together to look like one great big piece, so an aquarium of any size can be decorated. This wood is an important addition for any aquarium and provides an attractive, natural hiding place for many types of fish. They also are essential for the keeping of most plecostomus as it is a great source of the cellulose necessary for their health and diet (no they do not eat the algae off of the side of your aquarium) and is a must have for keeping them.