CaribSea Eco-Complete Planted Aquarium Substrate is the ultimate solution for freshwater planted tanks, providing a nutrient-rich soil for vibrant plant growth. This 20 lb bag of black substrate is designed to support healthy root development and provide the essential nutrients aquatic plants need to thrive. Enriched with trace elements, Eco-Complete helps promote biological filtration, stabilizing the water and supporting nitrate reduction for a balanced tank. Unlike many substrates, it requires no additional fertilizers, offering an all-in-one solution for low-maintenance aquarium care. The porous structure of the substrate ensures efficient nutrient cycling, making it an ideal choice for aquarists who want healthy plants without the hassle. Whether setting up a new planted aquarium or upgrading an existing one, Eco-Complete provides a reliable, long-lasting foundation that supports both plant health and overall aquarium stability, ensuring your planted tank flourishes.