Finest-Filters 6 pack replacement filter pre filter foams compatible with the Oase Biomaster external aquarium filters.

We stock all 3 grades of pre filters – 30ppi brown, 45ppi blue or 60ppi black. Please select the option required from the drop down menu when ordering.

Finest-Filters replacement filter foams compatible with the Oase Biomaster external aquarium filters.

We stock both the coarse 20ppi blue foam and fine 30ppi red foam.

We also offer a cost saving pack consisting of both foams. Please select the option required from the drop-down menu when ordering.