The OASE ProfiClear Premium automated Drum Filters require very little maintenance and as such, require very few consumable spares. However, it is important to keep the filter sieves in top condition to ensure the filter is operating at its most efficient in your pond. We offer the full range of standard sieves for the ProFiClear Premium-L (Pump fed and Gravity fed) drums, ProfiClear Compact-M and Compact-L in both pump and gravity guises and the BioTec Premium 80000 Drum Filter. OASE Germany have also developed new sieves to cater for more demanding Koi stocked ponds and ornamental swim ponds and these include finer micron mesh sieves for smaller particulate extraction and coarse sieves for heavily soiled water.