Fluval C4 Bio-Screen Pad provides massive biological surface area for friendly bacteria to colonize, plus it blocks debris and evenly distributes water flow before it drips into the Power Filter's biological trickle chamber.
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Provides massive biological surface area for friendly bacteria to colonize
Blocks debris and evenly distributes water flow before it drips into the Power Filter's biological trickle chamber
For Fluval C4 Power Filter
3-pack
