The Ultum Nature Systems Controsoil is a great way to add some life to your aquarium. This soil is designed to be placed in planted aquariums, and it provides optimal oxygen exchange and rich nutrients for the aquatic plants. The low ammonia release promotes and accelerates beneficial bacteria growth, and the no rinsing required helps clarify and detoxify the cloudy water. The pH and kH buffering help to keep the water at a slightly acidic pH and lower total water hardness, so the plants can get the best possible nutrients.