Red Sea Reef Spec Aquarium Carbon 1000 ml – Superior Activated Carbon for Marine or Freshwater, Eliminates Toxins & Odors, Crystal Clear Water
$26.99




Price: $26.99
(as of Oct 27, 2025 17:46:55 UTC – Details)
Product description

Red Sea REEF-SPEC Carbon is the ultimate choice for marine & reef aquariums due to its unique characteristics. REEF-SPEC Carbon’s granule size and its structure, ensures a very high total adsorption capacity and rapid extraction of the specific pollutants that are found in Reef aquariums.
Red Sea Reef Spec Carbon is Available in 4 Different Sizes
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Customer Reviews
4.7 out of 5 stars 215
4.7 out of 5 stars 215
4.4 out of 5 stars 164
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4.2 out of 5 stars 35
Price
$49.99$49.99
$49.99$49.99
$26.99$26.99
$19.99$19.99
$17.99$17.99
Shape
0.6 – 2.3 mm flakes
0.6 – 2.3 mm flakes
0.6 – 2.3 mm flakes
0.6 – 2.3 mm flakes
0.6 – 2.3 mm flakes
Density
0.48 g/ml
0.48 g/ml
0.48 g/ml
0.48 g/ml
0.48 g/ml
Pore Volume (PV)
1.04 ml/g
1.04 ml/g
1.04 ml/g
1.04 ml/g
1.04 ml/g
Total Surface Area (TSA)
1000 m2/g
1000 m2/g
1000 m2/g
1000 m2/g
1000 m2/g
ph in distilled water
> 8 ph
> 8 ph
> 8 ph
> 8 ph
> 8 ph
How does activated Carbon filter water?
Carbon removes the organics from water by a physical process called adsorption. Within an aquarium, the submicroscopic pores of activated Carbon is the final stage of the filtration process, adsorbing the organic molecules that are too small to be removed by by protein skimming.

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Organic Load & Yellow Tint Removal
The recommended dosage of Red Sea’s REEF-SPEC Carbon is approximately 50 gr (100 ml) per 200 L (50 gallons) for a period of 1-2 months for a moderately stocked reef aquarium.
Post-Medication Treatment
The recommended dosage of Red Sea’s REEF-SPEC Carbon to adsorb medication residuals is approximately 100 gr (200 ml) per 200 L (50 gallons) for a period of a week.
Ozone Post-Treatment
The dosage of Red Sea’s REEF-SPEC Carbon to remove residual ozone is 50 gr per 50mg/hr of ozone injection. The carbon should be placed at the ozone reactor/ protein skimmer. Carbon should be replaced once it has reached 50% of its original volume.
Usage tips
The adsorption activity of the Carbon media relies on a good Carbon/water contact, and therefore moderately active water flow will increase the efficiency. Strong water flow will reduce the contact time and interfere with the adhesion process of the organic molecules to the Carbon. Strong water flow may also cause the granules to grind against each other, releasing Carbon material to water.
Remove any fines, by rinsing Carbon under tap water.Due to air trapped in the pores Carbon will float, and therefore it is recommended to soak the Carbon in RO water until all of the air has been released.Place the Carbon in a location with an active flow of 1000-1500 lph (250-400 gph) per 50 gr carbon.Replace Carbon every 1.5 – 2 months. Note: When Carbon becomes saturated with organics, it may start adsorbing some of the trace elements from the seawater.
Is Discontinued By Manufacturer : No
Product Dimensions : 8 x 3.9 x 3.8 inches; 1.3 Pounds
Item model number : 37410
Date First Available : April 26, 2016
Manufacturer : Red Sea
ASIN : B01ETGMW8S
Best Sellers Rank: #68,263 in Pet Supplies (See Top 100 in Pet Supplies) #921 in Aquarium Filter Accessories
Customer Reviews: 4.4 4.4 out of 5 stars 164 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Rapid removal of organic pollutants
High total adsorption capacity
Ultra-low phosphate output, ultra-low ash content
Suitable for marine & freshwater
Filter bag included.
Age Range Description: All Stages
Customers say
Customers report that the activated carbon works great, with corals doing better than ever and immediate dinoflagellate reduction. Moreover, the product achieves crystal clear water with super low dust levels, and customers find it to be of high quality and good value for money.
13 reviews for Red Sea Reef Spec Aquarium Carbon 1000 ml – Superior Activated Carbon for Marine or Freshwater, Eliminates Toxins & Odors, Crystal Clear Water
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$26.99
A&J –
Not All Carbon Is Created Equal! Reef-Spec Works Great
So much better than the budget Economy Carbon. Don’t waste money on those big bags that last a few days, spend a little more and get a LOT more. Use about 1/4 cup in my CPR Nano Tumbler and another 1/4 cup in a filter sock. Super low dust, rinses clear quick and doesn’t dust out the tank. Now my water has no yellow tint and is crystal clear.
S.W –
Good just expensive
It’s good. Comparable to rox8 just a little more pricey. Saw an immediate reduction in dinos after using in my 125 gallon reef tank. Not much dust when rinsed
Paul Winchester –
A high quality Carbon from a Trusted brand
Awesome stuff, Low dust which is a huge plus… Great for stripping out medications and yellowing of water,
J S –
Works
Works price is good
Amazon Customer –
Keeps my water crystal clear and my corals are doing better than ever in my coralife biocube29
I was a chemipure user and switched to this and would not go back. Keeps my water crystal clear and my corals are doing better than ever in my coralife biocube29.
Darin M –
Four Stars
works great. I use this on my Biocube 29 change small amount every month
Amazon Customer –
Filter bag buried in the bottom of the jar
You have to dump out the whole jar to get to the buried filter bag. Â Really?Â
JPS –
Something was missingâ¦
I donât know how this works yet because the bad to hold the carbon was not included even though it says it is!
Shianne M –
I always ensure I have this available, and run it full time under my ReefMat.
Philippe –
The particles are not too thin and not too big. The free zip bag is great.The instructions are clear. My water seems clearer than ever :)Good for reef with sps.
Edmundo Lizama –
Bote llego abierto, sin la bolsa que según esto estaba incluida. Supongo que fue en la revisión de la aduana. Al ser producto importado, imposible hacer algo.Aclaración: La bolsa esta âenterradaâ en el carbon. Vaciar el bote a la mitad. La bolsa viene dentro de una bolsa de plástico.
Real Customer –
Love this stuff. If you want crystal clear water buy it.
bkb –
Exactly what we needed and arrived in good time