Dennerle Nano DeponitMix is a special nutrient medium for mini aquaria it provides the foundation for lush plant growth. It supplies aquarium plants with vital nutrients through the roots. Nano DeponitMix has been developed specifically for the sensitive situation regarding nutrients in mini-aquaria. It forms the bottom bed layer of approx. 2 cm in height. - Contains all vital nutrients and trace elements. - Plus iron for healthy rich green leaves. - Depot effect for magnificent plant growth over many years. - Guaranteed safe for invertebrates. 1kg pack sufficient for 10 - 20 litres.