Seachem Flourite Black Sand 3.5kg Canister Filter Max Glass Thickness: 0

Max Glass Thickness: 0

Rinse before use

A high pH level (alkaline) of the substrate causes difficulties for aquatic plants in consuming nutrients

It is sized to allow full penetration by water

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Seachem Flourite Black Sand 3.5kg Canister Filter Max Glass Thickness: 0Description Flourite Black Sand is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment. Flourite Black Sand is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Flourite Black Sand is not chemically coated or treated