Seachem Flourite Black Sand 3.5kg Canister Filter Observe animals during treatment for

Observe animals during treatment for evidence of adverse reactions such as excessive sliming

It is sized to allow full penetration by water

It is preferred that the two products be added to separate locations in the tank

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use as required to maintain magnesium

Seachem Flourite Black Sand 3.5kg Canister Filter Observe animals during treatment forDescription 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