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  • Cascade 200 Cartridge [3 pk]

    Cascade 200 Cartridge [3 pk]

    Disposable floss & carbon replacement cartridges. Fits Cascade 300 hang-on power filter.…

    $9.58
  • Cascade 300 Bio-Sponge Cartridge [2 pk]

    Cascade 300 Bio-Sponge Cartridge [2 pk]

    Replacement cartridges for the Penn Plax Cascade 300 Power Filter.…

    $6.89
  • Cascade 300 Cartridge [3pk]

    Cascade 300 Cartridge [3pk]

    Quick, easy, ready-to use disposable floss/carbon filter cartridges. Precision designed for the Penn Plax Cascade 300 power filter.…

    $15.49
  • Filt-A-Carb fits Undertow and Perfecto

    Filt-A-Carb fits Undertow and Perfecto

    For crystal clear water with convenient, trouble-free maintenance. Top quality activated carbon removes harmful gases and odors. Clears up unsightly discoloration. Fits Penn-Plax Undertow and Perfecto…

    $3.63
  • Filt-A-Carb for UnderCurrent

    Filt-A-Carb for UnderCurrent

    For crystal clear water with convenient, trouble-free maintenance. Top quality activated carbon removes harmful gases and odors. Clears up unsightly discoloration. Fits any Penn-Plax Undercurrent filt…

    $3.65
  • Filt-A-Carb Undertow Economy [2 pk]

    Filt-A-Carb Undertow Economy [2 pk]

    For crystal clear water with convenient, trouble-free maintenance. Top quality activated carbon removes harmful gases and odors and clears up unsightly discolouration of aquarium water. Fits Multi-Por…

    $3.42
  • Filt-A-Carb [Universal Size]

    Filt-A-Carb [Universal Size]

    For crystal clear water with convenient, trouble-free maintenance. Top quality activated carbon removes harmful gases and odors. Clears up unsightly discoloration. Fits most undergravel filters.…

    $4.89
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