SKU: 3112430945

Seachem Matrix Carbon

Sale price$152.55 Regular price$169.50
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Description

Seachem Matrix CarbonSeachem MatrixCarbon Seachem MatrixCarbon is used for water filtration in aquariums, effectively removing organic matter while having minimal impact on pH and the lowest leachable phosphate content among major carbon brands. High efficiency spherical carbon Very little impact on pH due to low ash content Lowest leachable phosphate level on the market High removal capacity; large surface area Seachem Matrix Carbon is a truly unique activated carbon. It

Seachem MatrixCarbon

Seachem MatrixCarbon is used for water filtration in aquariums, effectively removing organic matter while having minimal impact on pH and the lowest leachable phosphate content among major carbon brands.

  • High-efficiency spherical carbon
  • Very little impact on pH due to low ash content
  • Lowest leachable phosphate level on the market
  • High removal capacity; large surface area

Seachem Matrix Carbon is a truly unique activated carbon. It is formed as a spherical bead for optimum hydrodynamics, and will not pack. It permits maximum water flow and contact with its high density of macroporous binding sites. MatrixCarbon™ has a very low ash content as indicated by its minimal impact on pH. Even when added to distilled water, it does not raise pH above 7.0. While all carbons contain phosphate, regardless of false claims to the contrary, MatrixCarbon™ has the lowest detectable leachable phosphate content of all major carbon brands tested. MatrixCarbon™ outperforms other high grade carbons by at least two-fold when compared for total capacity to remove aquarium organic matter, rate of adsorption, and duration of use.

While carbon is generally considered to be a chemical filter, that is not precisely true. It is in fact a mechanical filter as well, but it is only capable of mechanically filtering objects of molecular size. It functions through extremely small cracks and crevices, called macropores and micropores. Microporous carbons remove primarily metals and smaller ions (like trace minerals) and are best suited to air filtration, while macroporous carbons remove primarily larger organic molecules (like nitrogenous waste) and are best suited to water filtration.

The ingredients from which a carbon is manufactured determine whether it will be macro- or microporous. Carbons made from coconut shell and other organic products form microporous carbons, while carbons made from bituminous coal form macroporous carbons. MatrixCarbon™ is a bituminous coal-based, macroporous carbon. It is the only spherical carbon on the market, allowing for maximum water flow. It is sized to allow full penetration by water, but not small enough to escape filter bags. All carbons contain phosphate. However, that phosphate DOES NOT come from washing the carbon with phosphoric acid. Most carbons are washed with sulfuric acid. The phosphate is contained in the ash from the carbon source. The main purpose of acid-washing is to remove ash. Because of MatrixCarbon’s™ hydrodynamic properties, more ash is washed from our carbon than any other. Therefore, it has the lowest leachable phosphate on the market.

Directions

250 mL will easily treat 400 L (100 gallons*) for several months. MatrixCarbon™ is very clean and nearly dust-free. For best results, MatrixCarbon™ 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

Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3112430945

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4.7 ★★★★★
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Verified Purchase
Mary
Phoenix, US
★★★★★ 3
The colors are way off
Color: 259 ASH BROWN, Size: 1 Count (Pack of 1)
The ash brown is basically black. However, I do think the gel helps set the brow color and I have been using a ash blonde color and then applying the gel.
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Reviewed in the United States on February 9, 2026
J
Verified Purchase
JStewart
Natrona Heights, US
★★★★★ 5
So Good!
Color: 262 BLACK BROWN, Size: 1 Count (Pack of 1)
This is my absolute favorite bow pen I've ever tried. The brush tip is incredibly fine and makes each stroke a perfect hair like finish. I tend to get heavy handed with other options like brow powders so having an option for thin hair like stokes makes it incredibly hard to taken it too far. The tip doesn't dry out to the point of skipping or Inconsistency without you knowing its time to refresh it by capping and shaking, but I do find that it comes back refreshed and even better the more you repeat the capping and shaking step between brows. Easy to hold and design. I wasn't totally blown away with the brow gel it comes with attached to the pen when it comes to hold power. It doesn't flake at all and doesn't leave a cast of white or sheen to the brow, which is a plus. It's just a nice way to loosely set the brow after application. There is some wiggle room with wiping the product off with a q tip if a mistake is made, but once the pigment is dry, it doesn't budge all day, even after intense exercise or humid conditions. I'll be repurchased this like... now, and hope it never gets discontinued!
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Reviewed in the United States on April 10, 2024
S
Verified Purchase
Susan Lace
Boise, US
★★★★★ 1
Defective product from Amazon.
Color: 255 SOFT BROWN, Size: 1 Count (Pack of 1)
I have used this product many times and I think it is a good product. I usually buy it at Target. The product I received from Amazon was defective. The pen was totally dried out and I was not able to paint a brow. There was liquid in the brush side, but it is colorless and meant to be a finish to make the color last longer. Maybe just a one time fluke, but I'd purchase this elsewhere.
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Reviewed in the United States on June 7, 2026
J
Verified Purchase
Jane Sell
New York, US
★★★★★ 5
Eyebrows!
Color: 257 MEDIUM BROWN, Size: 1 Count (Pack of 1)
Great color and great price!
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Reviewed in the United States on April 29, 2026
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Verified Purchase
waltS
San Leandro, US
★★★★★ 5
Solid edger for the price!
Easy to assemble and works well for my needs edging the driveway and sidewalk! Reasonable price and seems fairly well made so far! I’ve only used it a couple of times but does the job well!
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Reviewed in the United States on May 31, 2026

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