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 aquarium environment. Did you know? Seachem's substrates for the planted aquarium never need to be replaced. They remain effective for the life of the aquarium, so the only time you'll ever need to change out your gravel is if you want a different color...
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