K1 & Kplus Media

Supercharge your biological nitrification and mechanical waste capture with our range of authentic Evolution Aqua K1, K1 Micro, and K+ filter media. Trusted by professional koi breeders and pond builders worldwide, K1 media remains the global benchmark for moving-bed bioreactors, Nexus filter systems, and static mechanical pre-filters.

Our collection includes original K1, fine-trapping K1 Micro, and the advanced K+ Media range, which is manufactured with a blend of raw minerals and enzymes to accelerate bacterial colonisation and reduce filter maturation times. Engineered with an intricate wheel-and-fin profile, each piece provides an immense protected surface area where nitrifying bacteria can break down harmful ammonia and nitrite without risk of being stripped away during intense aeration. The continuous tumbling motion in fluidised moving-bed chambers keeps the media self-cleaning, preventing tracking channels and stagnant debris build-up. Whether you are replacing media in an EazyPod, boosting the capacity of a Nexus filter, or building a custom moving-bed chamber, explore our complete K1 and K+ media collection to find dependable, high-surface-area biomedia engineered for crystal-clear water and stable pond parameters.