Exxodus Nitryx Brick if a very porous filter media and when nitrate reduction is required use anaerobic method
Exxodus BAC is an extremely porous filtration medium designed to be used in all aquariums and aquatic systems for bio-filtration It literally has the highest surface area of any filtration medium in the world, by far, yet it provides excellent flow characteristics! Each liter of Exxodus BAC provides over 71,000 square feet of useable surface area, internally, for bacterial colonization, providing for nitrification and vast amounts of anaerobic or anoxic surface area to foster denitrification, as well One brick provides about 100,000 square feet of useable surface area for bacterial colonization
Doped with real aragonite for pH control at bacterial sites Exxodus BAC will reduce the levels of toxic ammonia, nitrites and nitrates, as well as phosphates and organic pollutants in all aquaria It may be used as your primary or only bacterial filtration medium
It works extremely well in systems of all sizes It is particularly well suited to reef systems with live rock including FOWLR systems and will not foster problems that bio balls may Use in an external biological filter of any type
Works well submerged, or under gravel or sand, or in a drip system For best denitration, restrict water flow through material For best nitrification increase water flow through the material.