These Finest Filters replacement filter foams are compatible with the Oase Biosmart range of filters, which were formally known as the Biotec 5.1 and 10.1 filters.

Although these are not original brand foams, our foams are made to the exact same specification as the original filters, and unlike other sellers, we do not substitute the red foam for cheaper quality green foams! These foams are made to the same specification and colour as the original filters!

These coarse, medium and fine filter foams are available in a range combinations to suit different filter models. Please see the drop down menu above to make your choice of number of filters required based on your filter model. We also sell the three types of foam separately if required.

The Biosmart 18000 foam set contains 2 x coarse blue, 1 x medium red and 1 x fine green foam.

The Biosmart 20000/24000/30000/36000 foam set contains 4 x coarse blue, 4 x medium red and 1 x fine green foam.

The Biotec 5.1 foam set contains 2 x coarse blue, 1 x medium red and 1 x fine green foam.

The Biotec 10.1 foam set is 4 x coarse blue 4 x medium green and 1 x fine green

These foams measure 250mm Long x 200mm Deep x 80mm wide.