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Phosban can be rinsed briefly before use but do not stir as it is friable and it will pulverise the granules
Where the original Nano Tech bio blocks and spheres excel in housing aerobic bacteria these patented blocks excel at housing anaerobic bacteria
yet still low wattage and energy efficient
High flow - up to 7
Seachem Purigen 250ml RO units Phosban can be rinsed brieflySeachem Purigen Highest organic removal capacity Possesses enhanced capacity owing to its vast surface area; both spherical and macroreticular Helps control ammonia nitrite nitrate Color changes as it exhausts; easily regenerated Controls ammonia, nitrites and nitrates. For use in Marine and Freshwater systems 250ml treats up to 1,000L