Dennerle Deponit-Mix Black 10in1 is a black long-term mineral substrate for all planted aquariums. Specially developed for combination with black gravel. Following the example of nature and with the entire know-how from over 50 years of research into aquarium plants. All nutrients and trace elements are in depot form with immediate and long-term effects. Dennerle Deponit-Mix Black ensures safe growth and strong root formation, even with sensitive species. The nutrient medium contains no additional phosphates and nitrates and is therefore not beneficial for algae. Guaranteed safe for all plants, fish, shrimp, crayfish, snails and other aquarium inhabitants.Growth power made in Germany. So that you can experience the full vigor and lush splendor of the tropics at home in your own aquarium.Dennerle Deponit-Mix Black 10in1+ fine-grain basalt granulate creates an optimal substrate climate+ concentrated nutrient iron in depot form ensures lush green leaves+ highly effective thanks to a profe