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Extremely porous filtration medium for biofiltration designed to be used in all aquariums and aquatic systems with a pH of 7.5 or higher. One brick provides around 100,000 sq. ft of surface area for bacterial colonization. Doped with sulfur particles for the cultivation of large amounts of anaerobic microbes to provide for a large denitrification capacity. 9x8x1.5" Plate. Made in the USA.
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🇺🇸 Ship from USA · On Agora since 2025
$65.13