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Extremely porous filtration medium designed to be used in all aquariums and aquatic systems with a pH of 7.5 or over for biofiltration. Highest surface area of any filtration medium in the world. Each liter provides over 40,000 square feet of surface area internally for bacterial colonization. Doped with sulfur particles to provide for a large denitration capacity. Made in the USA.
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🇺🇸 Ship from USA · On Agora since 2025
$13.45