Long-lasting fertilizer base material with other base material for use when setting up an aquarium. The package also contains fertilizer balls that you can push directly onto the roots of the plants mixed with the base material. Long-term soil fertilizer with repository effect for Aquarium plants Contains a unique combination of nutrients from valuable trace elements and ferrous natural soils Supports strong root development, prevents symptoms of deficiency and guarantees lush plant growth. Ideal for aquascaping Incl. 10 laterite balls. Use: Mix the fertile soil with around one third of the gravel intended for the substrate and distribute evenly in the aquarium. Cover with the rest of the gravel. Press the laterite balls into the roots of the plants concerned as a focus fertilizer. Long-term soil fertilizers are available in two packaging sizes: 3 kg is sufficient for the substrate of an aquarium up to 50 - 80 liters. Incl. 10 laterite balls. 5 kg for Aquarium sizes up to 150 liters. Incl. 20 laterite balls. 9 kg for Aquarium sizes up to 250 liters. Incl. 40 laterite balls.