Advanced Biological Filtration for Clear, Healthy Water
Evolution Aqua K1 & K+ Filter Media are industry-leading solutions for biological filtration, designed to deliver maximum surface area, rapid bacteria growth, and long-term water stability in ponds and aquariums.
Manufactured by Evolution Aqua, both media types are trusted by professionals worldwide and are the backbone of high-performance filtration systems such as Nexus moving bed filters.
K1 Media – Proven Self-Cleaning Filtration
K1 Media is the original moving bed media, engineered to provide:
✔ High surface area for beneficial bacteria
✔ Continuous self-cleaning through constant movement
✔ Stable bio-film development
✔ Low maintenance filtration
As the media moves within the filter, it naturally sheds dead bacteria while maintaining active colonies—ensuring consistent biological performance.
K+ Media takes biological filtration to the next level with an upgraded design and enhanced material composition.
Choose K1 or K+ Media if you want:
Strong biological filtration
Clear, stable water conditions
Faster filter maturation (K+ Media)
Low-maintenance filtration systems
✔ High Surface Area | ✔ Self-Cleaning | ✔ Professional Filtration Media
Upgrade your filtration and build a healthier pond system from the core.
Professional Moving Bed Filtration Media | High Surface Area | Evolution Aqua K1
✔ UK Stockist
✔ Trusted Pond & Koi Specialist
✔ Secure Checkout •
Easy Returns📦
UK mainland delivery🚚
Dispatch in 1–2 working days 💷
Free delivery on orders over £200