FAQ: Do I need to remove Seachem Purigen® from my filter while medicating with ParaGuard™?

While the primary active ingredient in ParaGuard™ is unaffected by the presence of Purigen®, the malachite green does have potential to be removed by the media. Since the product is most effective when both of these components are present to perform synergistically, we do recommend that the Purigen® (as well as any other chemical filtration media) be removed while treating. If removal of waste is of primary concern in the treatment tank, then Purigen® may be left in place, but the medication will not be as effective.