Nutrient substrate for long-lasting plant growth in freshwater s. Action. Nutrient reservoir: contains essential plant nutrients such as iron. Clay components store nutrients and release them later when needed. Effectively prevents the growth of unwanted algae by stimulating plant growth. Use for new tanks: place the nutrient substrate and cover with a layer of washed substrate from sol. Includes: 1 bag of ready-to-use, long-lasting nutrient substrate for garden plants.
