Perfect for Planted Aquarium Hobbyist & Professionals. Easy to use and helps grow healthy aquatic plants. To fill the aquarium with water, first place a large plastic bag or newspaper on the soil surface to prevent water from impacting and stirring up the substrate. Slowly add water and take care not to disturb the substrate layer. Planting can be easily done when water is slightly above the substrate level. Aquarium Soil is the ideal substrate for plants, many varieties of ornamental shrimps and fish that prefer weak acidic and soft water environments by decreasing pH levels and water hardness.