Bio Media Plus moving bed bioreactor reactor (MBBR) filter media has a well-documented history in filter applications.  Bio Media Plus may be used for pond filters, aquaponics, hydroponics, sewage treatment, DIY applications, and more.   Bio Media Plus is slightly buoyant and perfect for mechanical or biological filtration and is available in three sizes!

How does it work?
Bio Media Plus is designed to be slightly buoyant and move freely or remain static (still) in your filter.  The bio-media provides the maximum surface area necessary to allow beneficial bacteria to colonize (grow) and remove ammonia and nitrites from your water.  Removing ammonia and nitrites from your water is essential for healthy koi (fish).  As the bio-media moves around in the filter chamber the bacteria go to work and start removing the ammonia and nitrites.  When your bacteria mature Bio Media Plus is the perfect and most efficient way to remove ammonia and nitrites.

How is Bio Media Plus different and self cleaning?
Bio Media Plus is engineered and designed to provide a place for the bacteria to grow and still be protected while it is moving around in the filter chamber.   While water and air in your filter chamber cause the bio-media to move around, the “old” or “dead” bacteria along with any solid waste to fall off.  This chaotic movement makes the filter media self cleaning.  This will also make room for new bacteria to colonize inside the protected wheel.

How much Bio Media Plus do I need?
How much you need will depend on your filter chamber.  The chamber should be filled approximately 60% to 75%.  Here are some some rough estimates:

Model

Size

Surface Area

Supports

K5

5 mm x 10 mm

>3500 m2/m3

130 lbs. of fish per 2 cubic feet

K4

15 mm x 15 mm

>900 m2/m3

38 lbs. of fish per 2 cubic feet

K3

25 mm x 12 mm

>500 m2/m3

42 lbs. of fish per 2 cubic feet

K2

10 mm x 7 mm

>1000 m2/m3

42 lbs. of fish per 2 cubic feet

K1

12 mm x 9 mm

>800 m2/m3

35 lbs. of fish per 2 cubic feet