Bulk Reef Supply

BRS Bulk Large Particle Lignite Aquarium Carbon

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BRS Bulk Large Particle Lignite Carbon is a great option as a general water polisher and is very effective at removing yellowing pigments, contaminants and irritants from your tank. Both our Small and Large Particle Lignite carbon offer very good performance and are priced to be a great value. We purchase our carbon directly from the manufacturer so we can offer the best carbon at reasonable prices. While most companies claim their carbon is the best, our statement is backed with true science and real numbers.


Features and benefits:

  • Better performance then name brand carbons
  • Crystal clear water
  • A healthier tank


BRS Activated Lignite Carbon comes in two particle sizes.

  • Small Particle has more surface area and is slightly more effective than Large Particle, but with more dust.
  • Large Particle is has wider compatibility with different reactors and will clog more slowly.


BRS Lignite Carbon will outperform competing brands for less. The primary function of carbon is to remove color pigments, pollutants, and medications from an aquarium. Each these contaminants has a larger molecule structure and requires a carbon with a pore size large enough to effectively remove them. Our Lignite Carbon contains a high number of large pores capable of removing these molecules.


BRS Bulk Lignite Carbon Specifications

  • Molasses Decolorizing efficiency 85 MIN
  • Dust% 0.40 Max
  • Iodine Number 625
  • Surface Area M2/g 650
  • Total pore Volume mL/g 0.95
  • Washed with Hydrochloric Acid
  • Food Chemical Codex: Passes


Instructions: We recommend 1 Tablespoon of BRS Large Particle Lignite Carbon per 8 Gallons of tank water either placed in a media bag, or reactor.

SPECIAL NOTE: Lignite carbon contains more dust because it is softer. Be gentle when rinsing and do not tumble the material in a reactor which will create more fines. Carbon is most effective at slow flow rates. For a harder carbon with low dust please try BRS Premium ROX 0.8 Carbon.


Different carbons are not created equal. Different sizes, shapes, and materials will perform with drastically varying results. Check out our Carbon Quick Compare Chart below before deciding on the best carbon for your saltwater system.


Quick Compare - Carbon

 Special Grade BituminousLignitePremium ROX 0.8
BRS Recommended - - YES
Color Removal




Removal of Dissolved Organic Compounds




Pore Size



Small, Medium & Large

Overall Performance




Average Rinse Time in a Filter Sock

30 Seconds

2 Minutes

10 Seconds

Extractables Low Low

Ultra Low

Dust Low Most Ultra Low
Best Application Filter socks, Reactors and Equipment requiring large low dust media Reactors Filter socks and reactors capable of using small particle media
All of our carbons work well in the BRS reactor which is our suggested method of utilizing carbon in the aquarium.
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Product Questions

How long before 8tlbs become exhausted? Used in a reactor small bioload.
Question by: Jamie on Jan 9, 2017, 2:55 PM
Great question! We typically change the carbon when we start to notice pigment in the water column. The easiest way to test that is, during a water change, place a white bucket of old tank water next to a white bucket of freshly mixed salt water and compare the two. The old tank water may have a brown/yellowish stain while the fresh saltwater will be clear and more blue. :-)

Check out the video we did on this exact topic, in the link below!

Answer by: Randy on Jan 10, 2017, 11:24 AM
Hello, I'm in need of some carbon and Gfo. I have a 400 gallon system with a 285 gallon display tank. I'm relatively new to the hobby so I was liking for some guidance. I lost a nice bet of fish over the winter for not having the proper heating in my tank (even though I live in south Florida my tank is in the garage and built into the wall) I was having an algae prob so I bought 2 reef octopus media reactors and pumps. Just looking for the right bro and carbon for my system. It's a reef and fish tank. My corals are now suffering as well for some reason even though I only have 3 small fish in the tank. Thank you for your guidance.
Question by: Nick romano on Jun 21, 2016, 2:09 PM
Great question!
Carbon can help to eliminate toxins and color from the water, GFO will help to reduce phosphates. I have included a few links below to good media as well as the calculator to find out how much of each.
Answer by: Connor on Jun 21, 2016, 3:59 PM
How many cups in one gallon of the lignite carbon?
Question by: Jason on Apr 24, 2014, 6:45 AM
Hi Jason,
There are 16 cups in a gallon.
Answer by: Bulk Reef Supply on Apr 24, 2014, 6:45 AM
How much of this carbon should be used in a reef tank? Is one cup per 50 gallons sufficient? Is changing out the carbon once a month a proper schedule?
Question by: Jeffrey on Jan 18, 2014, 9:07 PM
Hey Jeffrey,
How much carbon to use depends on the particular carbon (and obviously tank size as you mention). The easiest way to figure it out with any of our carbon/gfo is to use the handy dandy reef calculator linked below (In the case of the lignite carbon it will tell you to use about 1/2 cup of carbon per 50g).

Answer by: Bulk Reef Supply on Jan 18, 2014, 9:07 PM