Seachem Matrix Carbon Aquarium Filter Media, 500 ml Spherical Beads

Seachem Matrix Carbon is a 500 ml activated carbon for aquarium filtration, designed to remove aquarium organic matter using spherical beads with microporous binding sites.

• 500 ml of activated carbon — provides a ready-to-use quantity for aquarium filtration.
• Spherical bead form that will not pack — supports water flow through the carbon.
• High-density microporous binding sites — provide contact areas for adsorption.
• Low ash content and minimal pH impact — even in distilled water, it does not raise pH above 7.0.
• At least two-fold performance against other high-grade carbons in three comparisons — total organic matter capacity, adsorption rate and duration of use.

Aquarium water passes through filtration media, where activated carbon can adsorb organic matter. Matrix Carbon is made for aquarists looking for carbon filtration with bead-shaped media that allows water to flow through rather than forming a packed mass. Its stated comparisons cover both the amount of aquarium organic matter removed and how quickly and how long the carbon adsorbs it.

What is Seachem Matrix Carbon designed to remove?

Seachem Matrix Carbon is designed to adsorb organic matter from aquarium water. Its high density of microporous binding sites gives water contact with the carbon as it flows through the spherical beads. The product is compared with other high-grade carbons for total capacity to remove aquarium organic matter, rate of adsorption and duration of use, with results of at least two-fold in those comparisons.

• Intended for aquarium organic matter removal.
• Performance comparisons address capacity, adsorption rate and duration of use.

How does the bead shape affect water flow?

The spherical beads are formed for hydrodynamics and do not pack. This shape permits maximum water flow and contact with the carbon’s binding sites. The media combines that bead structure with a high density of microporous sites, the surfaces responsible for binding material through adsorption.

• Spherical form designed for water movement through the media.
• Non-packing beads maintain flow paths through the carbon.

Will Seachem Matrix Carbon change aquarium water pH?

Seachem Matrix Carbon has low ash content and a minimal impact on pH; even when added to distilled water, it does not raise pH above 7.0. This is a specific pH claim for the stated distilled-water condition, rather than a promise that aquarium pH will reach or remain at a particular value.

• Low ash content.
• Does not raise distilled water above pH 7.0.

How does its phosphate content compare with other carbon?

All carbon contains phosphate, and Matrix Carbon has the lowest detectable leachable phosphate content among the major carbon brands tested. The comparison is about phosphate that can leach from the carbon; it does not claim that the media is phosphate-free.

• Lowest detectable leachable phosphate content among major brands tested.
• Carbon is not phosphate-free.

Seachem Matrix Carbon suits aquarium keepers seeking activated carbon media for organic matter adsorption, with a spherical non-packing form and stated comparisons for capacity, rate and duration. The 500 ml product is aquarium carbon filtration media, not a claim of a particular aquarium size or dosing schedule.