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Oase Biomaster External Canister Pre Filter Foams - 30, 45 or 60ppi£12.99Finest-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.
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