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“The folks at Seachem have done a wonderful job responding to the needs of aquatic gardeners
• Use a dry
It skims off the film residue and constantly brings new layers of water to the surface
5nm Purity=98
It is a blended buffer which will target a pH of ~6
Ocean Free Hydra Cata-Pure Cartridge 4 Pack Native & Specialist “The folks at Seachem haveThe Cata Pure Cartridge can last 9 12 months depending on the amount of fish and is functional in marine environments. Fits all model Hydra Internal Filters, Hydra Filtron & Inline Stream units which take the square cartridge. *HYDRA 30 NOTE: For the rectangular cartridge for the Hydra 30, click here. Please check your cartridge before purchase. The older model Hydra 30 have a rectangular cartridge, newer have the square. Model Number of Cata Pure
