Cloverleaf CL4 4 Bay Professional Koi Pond Filter Media Ref: CL4MEDIA A "CL4 Optional Media Kit" is available at extra cost as shown on the diagram with 28 Brushes, Jap-Mat, Foam & Aquarock. General description as for "CL2" & "CL3" filters. Price: £552.49 (Including VAT at 20%)