Price for Replacement carbon filter (25µm): £24.17, sub-micron filter (0.45µm): £55.32
Carbon: WATER ****  TEA ****
Sub-Micron: WATER ***  TEA ***

Penguin offer two filter media for their high-capacity Atlas Filtri housing. The sub-micron filter achieved a lower score in our taste test, removing some of the tank taste but leaving behind an aftertaste – but it will filter out bacteria and micro-organisms.
The carbon filter performed better in the taste test, on a par with the other activated carbon filters, leaving behind only a mild aftertaste. Size: 133x350mm.

We tested the Penguin Hydropure filter as part of a test of 9 water tank treatments, which you can read here