This activated carbon has a spherical shape for optimum water flow and superior chemical filtration. Water moves through it, not around it, allowing water to come in maximum contact with its highly porous binding sites. Greater contact between water and Matrix Carbon means more organic waste materials being removed before exhaustion. The result is cleaner, clearer aquarium water for a longer period of time. Treats twice as much water for twice as long as most activated carbons! Unlike conventional granular activated carbons, the unique spherical shape prevents compacting or channeling, and Matrix Carbon is very clean and nearly dust-free. Won't affect pH. 500 ml/200 grams will easily dose 200 gallons for several months.

Directions for Use: For the best results, Matrix Carbon should be placed so as to maximize the flow of water through it. It may be used in a canister filter, chemical filtration module, box filter, or any high flow area of a trickle filter.

Frequently Asked Questions regarding Matrix Carbon is available from the SeaChem Website.

Q: How long does your Matrix Carbon last?
A: Matrix Carbon is the only spherical shaped carbon on the market. It will not compact and create dead zones due to restricted water flow and as a result, it will use up all available absorptive sites before exhaustion. Actual time depends on initial water conditions. In very dirty water, it may last as little as a few hours; in very clean water, it may last several months. In general, 3 - 6 months is typical.

Q: You claim Matrix Carbon's spherical shape makes it a better carbon. Why does shape matter?
A: A spherical pellet has ideal hydrodynamic properties and provides for maximum water flow and contact without the compacting and channeling characteristic of granular activated carbon. Water channeling is likewise characteristic of carbon pelletized as cylindrical pellets. Such cylindrical pellets were originally engineered for air filtration and have poor water hydrodynamics. Matrix Carbon also has minimal impact on trace elements, an added bonus for the planted aquarium.