The ScaperLine Soil in the 9-liter pack is the perfect base for a planted aquascape – this active substrate ensures a beautiful appearance and provides the best conditions for lush plant growth. It softens the water and creates a slightly acidic pH range that is ideal for most aquarium plants. Active soil can also absorb nutrients from the water and release them again as needed – this buffering effect is ideal for consistently good plant growth. The grain size of our ScaperLine Soil is perfectly suited for small, medium, and large aquascapes and provides excellent support for plant roots. The black color of the substrate makes the colors of animals and plants truly shine. The soil is ready to use; no rinsing is necessary. The soil granules are fired at lower temperatures, making them stable yet not too hard.