For smaller ponds up to 80,000 Litres or Koi Ponds up to 20,000 Litres, OASE have developed the BioTec Premium 80000 and Compact M drum filters which are highly capable, compact pond filters with integrated self-cleaning drum and biological media segments. OASE have also released the ProfiClear Premium Compact L drum filter which can clean ornamental ponds up to 120,000 Litres and features a full-size drum and Hel-X biological filter media. The flagship ProfiClear Premium L modular system is the largest in the range, offering filtration in ponds up to 200,000 Litres and multiple rows can be used for larger bodies of water.
With the exception of the BioTec Premium, all drum filters are available in pump fed or gravity fed guises. Gravity systems are usually installed on bottom drain fed Koi ponds and swim ponds whereas pump fed systems are powered via a submersed pump or dry mounted pump in a sump chamber. All ProfiClear drum filters have been designed to neatly integrate with the OASE Bitron and Bitron Eco Ultraviolet Clarifiers and the larger modular systems can be coupled with multiple Moving Bed biological modules to remove unwanted nutrient.