Marineland Black Diamond Activated Carbon Filter Media

By Marineland
Rated 4.6863 out of 5 stars


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$30.99Chewy Price
$29.44Autoship Price
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Instant Ocean Reef Salt for Aquariums, 200-gal
Rated 4.5833 out of 5 stars
$99.99Chewy Price

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Total Price: $137.47

About This Item


  • Successfully eliminates discoloration, odors and impurities.
  • Leaves water polished and sparkling clean, and continues to do so long after other carbons quit.
  • Heat-activated bituminous coal-based Black Diamond granules are specially sized for optimum effectiveness.
  • Ideal for all aquarium filters.
  • More efficient than coconut, wood or peat-based carbons.

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Play Video: Learn More About Marineland From Our Team of Experts
Learn More About Marineland From Our Team of Experts

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Fish TypeMarine Fish, Tropical FreshwaterTropical FreshwaterKoi & Pond Fish, Marine Fish, Tropical FreshwaterTropical FreshwaterKoi & Pond Fish, Marine Fish, Tropical Freshwater, N/A
Aquarium TypeSaltwater, FreshwaterFreshwaterSaltwater, FreshwaterSaltwater, FreshwaterFreshwater
MaterialSynthetic Fabric, Nylon

Questions & Answers

20 Customer Questions

Do I need to put this charcoal in a mesh bag before placing in canister filter tray ? Can I just pour into tray ?
Answer by ChewyJul 31, 2018
Place the charcoal in a media bag or media basket and rinse thoroughly in cold water to eliminate dust.

Can you use this for a koi pond?
Answer by ChewyAug 13, 2019
This can be used in a pond. Typically, the recommendation is 1/2 cup per 10 gallons of water. Keep in mind, carbon removes some large organic molecules, medications, chlorine, pollutants and toxins, as well as many other types of chemical elements and compounds, but must be changed frequently for full benefits.

Can this activated carbon be used to clean and remove chlorine in drinking water?
Answer by ChewyJul 26, 2018
This filter media is not designed to be used with drinking water filtration. This would effectively filter heavy metals and compounds from water, but it will not provide any biological filtration.

What size are the pieces of carbon?
Answer by ChewyMar 30, 2018
The carbon is approximately 2 to 4 millimeters.

ReviewsWrite a Review

Rated 4.6863 out of 5 stars
51 Ratings
Would recommend to a friend

51 Customer Reviews

Rated 5 out of 5 stars
By Rottkeeper2004 on May 18, 2023

marineland media works good

I found it to work with the zerolite white chip and made what you sold them last month at a different online store 50 oz of zeolite.

Rated 3 out of 5 stars
By JoeyBoots9inches on May 27, 2023

what's the point

Get your delivery straightened out. 5 extra days don't work out for me. Sort it or abort it. I'll go elsewhere next time.

Rated 5 out of 5 stars
By George on Apr 30, 2023

Clear water

This media really works great. I add a little bit to my filter to augment the screen filter. The water stays crystal clear.

Rated 4 out of 5 stars
By Turtlestuff on Mar 30, 2023

Filter media

Use this in all my filters! Tutle, fish and pond. Only negative is you can not just place in filters. It has to be in a filter bag or sock.

Rated 5 out of 5 stars
By Dwayne on Mar 16, 2023

Crystal clear

This brand of premium activated carbon was delivered promptly. The rep gave me a choice of sizes and price.

Rated 5 out of 5 stars
By dean on Mar 23, 2023

i don't know what you want here

i a very happy with my purchase I will be back when i need something

Rated 3 out of 5 stars
By HiThere on Dec 15, 2021

Price great for quantity

Like one other reviewer wrote, I don't think this charcoal is truly activated. If so, it is exceptionally WEAK! This product also comes without a seal. Besides that, Chewy has been a pleasure to work with and getting this amount shipped out would cost more than 6 times the price any where else (although quality MIGHT just be better elsewhere). I bought 2. I'm on my third shipment of two and will find a way to use it - although not for the purpose I intended. Customer service is GREAT!!! I MUST STRESS THAT. I might not recommend this to a friend since it doesn't seem to perform like activated charcoal I have used in the past. To be fair, I used carbon from coconut and this likely came from another source. If someone I knew was in a pinch, then yes, I might tell them about this product (due to the price per quantity) while explaining what my experience was.

Rated 4 out of 5 stars
By Brian on Nov 16, 2021

carbon filtration

its carbon, what ya need a review for? micro orifices trap impurities, im sure there's more scientific explanation of active charcoal and various types like coconuts. remove chemicals ... not a scientist all i can tell You is that it works! I have a canister on 1 tank and a penguin for other tank that i got rid of the premade cartridge and got 2 after market inserts to make my own filtration media ...way cheaper usually buy 5lb bags at a time off web but when it was time to clean filters my supply was just enuf for the penguin and Chewy shipping is way faster than waiting a week! the Marineland Activated Carbon seems to work great at a slightly higher price maybe 2 or 3 bucks , im 2 weeks past my normal clean out and water is still crystal clear... yup good product may just stick with this brand who knows what ya get off the web, price wish it was a bit cheaper but ohhh went to wash the dust off and the water ran clear! the stuff i use is just black and takes a while to run clear, never looked but must be pre washed? defiantly a bonus!!! well, time to get busy vac n filter clean 2 thumbs up hope the info helps

Rated 5 out of 5 stars
By Beth on Jan 17, 2022

Love Chewy

I'm using this carbon in a terrarium that I'm still setting up.

Rated 5 out of 5 stars
By Pookie on Aug 18, 2021

Animal Master.

The experience was good so far and so is the new fillter.