All RDFs come with a Two-Year Manufacturer’s warranty and lifetime support.
    All parts are in US inventory for quick support of our US customers.


    Stainless Steel Construction

    Stainless steel construction withstands the harsh conditions in any koi pond environment. Durable 70 micron mesh gives crystal clear water while maintaining excellent flow rates.

    High Flow - Compact Size

    Optimized design for maximum submerged drum’s surface area for maximum flow in a smallest possible installation space. Top of the filter sits about 4 inch above water level allowing for low installation height.

    Fully Sealed with UV Silicon

    The silicone sealing mechanism is UV-resistant, simple design for reliable and excellent seal.

    Open and visible Design

    Open design input/output chambers with transparent lid for easily access and observation of water level, degree of dirtiness or any debris and leaves

    Control Box and Safety Features

    Control box features a simple ‘plug & play’ design that is easy to use, stable and durable, with easy maintenance while still handling all complex operations. Can operate in fully automatic mode (AUTOMATIC) or custom timer mode (MANUAL).

    Multi Inputs - Outputs Design

    Designed with maximum number of inlets and outlets allow for many inputs: skimmers, bottom drains, Midwater intake etc... and many outputs to multiple pumps or bio tanks

    Easy Access Waste Tray

    Large sloping open waste tray, leading to a large discharge pipe that makes it easy for waste to be pushed out. Easy access to remove leaves and large debris.

    Bypass Flow

    Filters are equipped with bypass ports (varied by models) which can be manually opened for emergency maintenance to allow water to continue flowing, bypassing the mesh drum.


     a professional drum filter for koi ponds


    FREEDrum Filter company was established in 2017 and quickly became the number-one manufacturer in Vietnam in stainless steel RDF. Over the years, we have grown into the leading manufacturer in Asia with thousands of units having been produced and sold across over 10 countries. Our RDFs are known for their beauty and years of proven reliability.


    We designed our RDF from the beginning with these principles:


    • Simple, easy to use, and still handles all of the complex functionality

    • Beautiful, durable, and reliable

    • Designed to operate with the most effectiveness


    • Our filters use high quality, robust, and simple electronic components to mitigate failures and make troubleshooting and replacing components easy.

    • No complex and delicate electronic modules that are prone to failure in the harsh koi pond environment.

    • 99% percent of the filter is stainless steel construction that can withstand harsh conditions.


    BeyondKoi is proud to be the exclusive distributor of FREEDrumfilter in the US.



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    Questions or Inquiries?

    Languages: English, Vietnamese