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  1. PolyFilter can replace a Skimmer?

    Beginner Saltwater Aquariums
    I have seen a lot about the polyfilter brand filter, claiming that it can replace the need for a skimmer in a SW tank. Check out this video: https://www.youtube.com/watch?v=qMIlWxX4q1c Fact or fiction? Can these filters be placed in regular hang-on-back filters and do the job of a skimmer?
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