Ammonia removers bind ammonia in a non-toxic form until your biological filter can process it. Keep one around for ...
Biological filter media gives beneficial bacteria a place to colonize and remove toxins produced by organic waste -...
These industrial-strength fit in most filters and skimmers and can be placed directly into the pond. Can be used wi...
Matala is the first media which is actually made for the express purpose of filtering koi ponds. Rolled Mata...
Matala® Pond Filter Sheet Set The various densities can be used in sequence or separately for unique fil...
Pond Ecology and Matala® Filter Media Within the last five years, the water garden and koi pond hobby ha...

Choosing a filter media warrants as much consideration in our planning, as should any other major element in our pond system. Filter media is not only for removing pollutants and debris from our ponds, but for allowing beneficial bacteria to colonize and grow.
Bacteria convert harmful nitrogen by-products from aquatic animals into less harmful nitrates. This process occurs naturally in nature's lakes and streams. In a Koi pond these bacteria are found on the walls of our ponds. They also can be found on the inside walls of the pond plumbing, attached to the skimmer basket, and on the rocks that form a waterfall.
The reason it is important to consider what filter media to use when we build biological filter systems, is to increase the available surface area for these bacteria to colonize.