Photo 1 of Trdzi Aquarium Fish Tank Filters Compatible with Penguin 200 350, Hang On Filters Replacement for Penguin BioWheel 200B 350B Assembly Biowheel Part, PRBW2350B, 2 Pack

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Photo 1 of Trdzi Aquarium Fish Tank Filters Compatible with Penguin 200 350, Hang On Filters Replacement for Penguin BioWheel 200B 350B Assembly Biowheel Part, PRBW2350B, 2 PackPhoto 2 of Trdzi Aquarium Fish Tank Filters Compatible with Penguin 200 350, Hang On Filters Replacement for Penguin BioWheel 200B 350B Assembly Biowheel Part, PRBW2350B, 2 Pack