Rotary Drum Filters and Sieves

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Rotary Drum Filters & Pond Sieves Rotary drum filters (RDFs) are the pinnacle of automatic mechanical filtration for koi ponds. A fine stainless-steel screen captures debris as water flows through, and a self-cleaning spray bar washes the screen continuously — no manual cleaning required. Play It Koi carries RDFs from Evolution Aqua , FREEDrum , and other premium manufacturers, plus gravity-fed sieve units for budget-conscious builds. RDF vs. Sieve RDFs are fully automatic and ideal for large, heavily stocked koi ponds. Sieves use a static screen that requires periodic manual cleaning but cost significantly less. Both deliver superior mechanical filtration compared to foam pads. Pro tip: pair any drum filter or sieve with a dedicated biological stage (moving bed chamber or bakki shower) for a complete two-stage filtration system. Play It Koi offers free shipping on orders over $99. Questions? Contact our pond experts for RDF recommendations. Related Categories All Pond Filtration · Biological Filtration · Bakki Showers · Pond Pumps · Mechanical Filtration