Seachem Purigen ® is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities.
How many people here are using Seachem Purigen in their filters to
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Seachem Purigen, 100 ml : : Pet Supplies