Aquacadabra Alfagrog E25 Ceramic Filter Media 15kg 20L Koi Pond

• HIGHLY POROUS FILTER MEDIA – Premium foamed ceramic filter substrate with an exceptionally high surface area, providing an ideal environment for beneficial bacteria to colonise.
• SUPPORTS BIOLOGICAL FILTRATION – Encourages the growth of nitrifying bacteria that help break down organic waste, supporting cleaner, healthier pond and aquarium water.
• INERT & PH NEUTRAL – Manufactured from durable foamed ceramic that is chemically inert and pH neutral, making it suitable for freshwater, marine aquariums and pond filtration systems.
• LIGHTWEIGHT & LONG LASTING – Strong yet lightweight ceramic media designed for long-term use in biological filters without compacting or restricting water flow.
• VERSATILE FILTER MEDIA – Suitable for a wide range of pond filters, aquarium filters and biological filtration systems. Supplied in irregular 10–45mm pieces for excellent water circulation.

Alfagrog filter substrate is highly porous, which gives it a large bacteria adhesion surface and optimal biological action. Alfagrog is a porous foamed ceramic material, which is lightweight, strong and inert. Its high surface area makes it the natural choice for colonisation by microorganisms in biological filtration systems, resulting in cleaner water.