Biohome Mini Ultra is most suitable for external canister filters, overhead filters, aquarium sumps, and aquarium shower / trickle filters. It could be described as a larger more porous version of the Biohome Standard media or a smaller type of the much larger Biohome Ultra. It has a porosity of over 50%. You can check out the extreme porosity of the Mini Ultra media yourself by touching just the tip of a piece media to the surface of some water. You'll be amazed at how fast the water is drawn up the entire length which clearly shows how much of the surface area (inside and out) is available to bacteria . Biohome Mini Ultra media is made from industrial grade material to ensure a long working life. Long working life and reliability are hallmarks of all Biohome products and used correctly Biohome Mini Ultra media will easily outperform all ceramic trickle tower and shower media in the removal of ammonia, nitrite and nitrate. Biohome Mini Ultra is an efficient biological filter media and good mechanical filtration must be provided to insure the water passing through it does not contain any debris that might clog it and reduce efficiency. It allows both nitrifying (aerobic) bacteria for reduction in ammonia and nitrite and denitrifying (anaerobic) bacteria for reduction in nitrate to grow on and through it's unique structure. For best nitrate reduction use approx. 1kg per 100 litres of aquarium water for a normally stocked tank. Heavily stocked systems can take between 1.5kg - 2kg per 100 litres to achieve full cycle filtration (reduction in nitrate). Replacement bacteria balls available here https://amzn.to/2Hn732U
