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 read more ››
Penn Plax Filt-a-Carb Undertow & Perfect-A-Flow Carbon Undergravel Filter Cartridge helps keep your aquarium water clean. Fits the Penn Plax Undertow and Perfect a Flow Filters. Contains quality read more ››
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