Fluval C4 Hang On Filter Bio-Screen size-11kg Acts as an addition to

Acts as an addition to pet diets and contains a natural product derived from casein (a protein in milk) which is known to promote relaxation

For optimal results

Although it is pre-washed

The carbon cartridge needs to be replaced every 2/4 months

Psyllium husk and slippery elm bark to aid in hairball reduction

Fluval C4 Hang On Filter Bio-Screen size-11kg Acts as an addition toGenuine replacement Bio Screen Pad is designed for: Fluval C4 Hang on Power Filter (14003) 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 Filters biological trickle chamber. Features: Blocks debris Large biological surface area Micro weave corefor even water flow Includes: 3 x Fluval Bio Screen Filter Pads