Evolution Aqua K1 Micro Media is an award winning filtration media. This new type of filter media contains all the benefits of traditional K1 media but is extruded in a much smaller form. It is recommended for use in most types of pond filter (including moving bed, box, pressure, and multi-bay), and is also suitable for some aquarium and commercial set ups too. We have this available in 1L, 25L and 50L packs.
