Black fluorite sand (for plants)

Seachem Flourite Black Sand is a very high quality substrate. It is composed of porous, stable, and specially graded clay, crushed into fine sand, specifically designed for natural planted aquariums. This mineral-rich sand has a beautiful deep black color. It is neither chemically treated nor coated, and does not alter the delicate pH balance of the aquarium. It is most effective when used alone but can also be mixed with other types of substrates without negative reaction.