Utkarsh AquaSoil is a substrate for aquarium plants. By applying thin layer under a layer of aquarium gravel, aquarium plants have sufficient nutrients. The layer functions as a nutrient substrate over a long period of time nutrients can deliver. The main constituents are natural clay and turf. These have the property to slow the nutrients down to the roots of aquarium plants, but hittingsimultaneously nutrients from the aquarium water in the soil. This can be a buffer with nutrients to build so that aquarium plants are always sufficient nutrients for the hands have to be lush to be able to grow.