Substrate Premium Soil 2 Pound for Planted Dwarf Shrimp Water Plants Activated A scientifically formulated substrate from natural soil, sintered into a soft, porous, and granular structure with excellent filtering power. With its excellent filtering power, Premium Soil helps maintain stable, healthy, and clear water for a long period of time. Sintered with organic acid; suitable for shrimp, fresh water fish, and plants. Water condition is naturally adjusted; ideal for aquatic plants and fish..Lowers PH/KH of the water; creates weak acid and soft water environment. Decolorizes the color from driftwood. Maintains water clarity for a long period of time. 8.Rapidly removes cloudiness and supports the development of aerobic bacter bacteria.