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Marineland Black Diamond Premium Activated Carbon, Filter Media For Aquariums, 40 Ounces

  • Based on 11,514 reviews
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Availability: Only 3 left in stock, order soon!
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Arrives Monday, May 12
Order within 2 hours and 51 minutes
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Size: 40 ounce


Features

  • FOR CHEMICAL AQUARIUM FILTRATION: Black Diamond Premium Activated Carbon removes odors, discoloration and impurities for clear, sparkling aquarium water.
  • SPECIALLY FORMULATED: Composed of heat-activated, bituminous coal-based carbon.
  • EFFICIENT: Specially sized keeps on working long after other carbons quit.
  • FOR ALL FILTERS: Ideal for use in all aquarium filters.
  • MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.

Description

From industry firsts to industry standards, Marineland products are designed with both performance and style in mind. We push precision and power beyond the expected and listen to our loyal customers to make our products even better. We do this because at the heart of our innovative spirit is a desire to help hobbyists everywhere do more, create more and, most of all, enjoy more. So whatever your customers are passionate about — freshwater or saltwater, big or small, beauty or science — help them make their aquarium their own. Make it Marineland. Marineland Black Diamond Media Premium Activated Carbon removes more discoloration, odors and impurities compared to our next leading competitor according to a 2015 University study. Use this premium activated carbon for sparkling clean water that helps create the aquarium of your dreams. Marineland Black Diamond Media Premium Activated Carbon is ideal for all aquarium filters and is specifically sized to be more efficient.

Brand: MarineLand


Liquid Volume: 40 Fluid Ounces


Item Weight: 0.01 Ounces


Item Form: Solid


Target Species: Fish


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 5.5 x 5 x 10 inches; 0.01 ounces


Item model number ‏ : ‎ PA0373


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ June 20, 2004


Manufacturer ‏ : ‎ Marineland


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #4,209 in Pet Supplies (See Top 100 in Pet Supplies) #27 in Aquarium Water Treatments


#27 in Aquarium Water Treatments:


Item Weight: 0.01 ounces


Department: Unisex-Adult


Manufacturer: Marineland


Country of Origin: USA


Item model number: PA0373


Date First Available: June 20, 2004


Item Package Dimensions L x W x H: 10.12 x 5.62 x 4.8 inches


Item Dimensions LxWxH: 5.5 x 5 x 10 inches


Item Weight: 0.01 Ounces


Brand Name: MarineLand


Target Audience Keyword: fish


Directions: Place the carbon in your aquarium filter according to the filter manufacturer's instructions


Country of Origin: United States


Model Name: Diamond Media Premium Activated Carbon


Color: Blacks & Grays


Size: 40 ounce


Material: Plastic


Age Range Description: 1


Number of Items: 1


Style: Carbon


Included Components: See Label


Specific Uses for Product: Aquarium


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Amazing!
Size: 40 ounce
Amazing stuff I don’t use it for an aquarium, I use it to keep the air in my house odor free and it works really well.
Reviewed in the United States on February 13, 2025 by Arman

  • Works well in my reef aquarium
Size: 22 ounce
I always incorporate a bag of carbon in my filter media system for my reef aquarium. For the last year I’ve been using this activated carbon because it’s a good price and it’s a trusted brand. The carbon is an essential component of filtration because it’s so great at removing excess organic compounds from the water column. I’ve noticed it keeps the water clear, removes odors, cuts down phosphates, and it helps prevent chemical warfare between corals. I have approximately 40-50 different corals at any given time in my aquarium and most of them are steadily growing. So far I attribute a portion of my success due to running carbon as part of my aquarium maintenance schedule. I replace it about once a month because it does begin to lose effectiveness at around that time. While running carbon is just one small piece of the puzzle in successfully keeping a reef aquarium, I would say it’s an important one to stay on top of. ... show more
Reviewed in the United States on August 10, 2023 by Dillon

  • good price
Size: 40 ounce
I love it for the price and the quantity.
Reviewed in the United States on March 5, 2025 by Luis E. Hernandez

  • Updated 6/8/20 - I'm no longer drinking the Chemi-pure Kool-aid; Affordable and reliable product
Size: 40 ounce
Updated 6/8/20 - I've been meaning to go back and change my review on this for a long time. MarineLand Diamond Media Premium Activated Carbon, Blacks & Grays, 40-Ounce (PA0373) has officially gone back to being my go-to active carbon for my 160 gallon mixed reef. Ounce for ounce and ounce per dollar, short of buying in LARGE bulk from one of the dedicated online fish stores, this product has provided consistent results at the right price point. I'll take off one star for it being so dusty. It feels like I've wasted a lot of water rinsing this stuff before putting it in my tank. Per my earlier reviews, I do still occasionally find it lodged in impellers but you could reasonably argue the fact that the carbon is getting in my impellers is my fault. Since my original review, BRS has done some good videos outlining the pros and cons of the various styles of active-carbon. I'm not sure if it was BRS, but somebody also did an excellent video showing a series of tanks all being cleaned with the assorted "flavors/sizes" of carbon over a period of time. After becoming more educated on how and why active carbon works, I've tried the high end stuff, the bulk eBay pond stuff, the boutique stuff, and ultimately I always come back to the 40oz bottle of MarineLand Diamond Media Premium Activated Carbon. So, I apologize to the good people at MarineLand who make the product. It amazes me that I've been in this hobby for almost 20 years and I feel like I'm still constantly learning new things. Knowledge is power, folks. Learn on! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I decided to try this stuff instead of my usual product ChemiPure. I use a Phosban Reactor 550 for carbon filtration on my 125 gallon reef. A couple weeks after putting this new stuff in my reactor, I noticed that my reef octopus BH-2000 skimmer was making strange noises. I also noticed a lot of the new activated carbon floating on the surface of my tank. I discovered that the carbon was getting stuck in the finger impeller on the skimmer's pump. The image was taken 24 hours after cleaning the impeller. Also - I normally see a huge improvement in water quality 24 hours after using ChemiPure. I didn't see any improvements with this stuff. I've ordered a new batch of ChemiPure. The marineland product is going in the trash. ... show more
Reviewed in the United States on February 18, 2016 by TimCO TimCO

  • Id buy again
Size: 40 ounce
Well worth it.
Reviewed in the United States on March 9, 2025 by Christopher

  • Keep the water in the fish tank clean.
Size: 40 ounce
Whenever I change the filter on my fish tank, I open the filter and add this to it before putting it in the filter, and the water in the fish tank becomes clear within a few days. Very useful.
Reviewed in the United States on March 12, 2025 by Ryan

  • Fish tank charcoal
Size: 40 ounce
Good product and a great price!
Reviewed in the United States on February 15, 2025 by Jaime

  • Cat Litter Robot's friend
Size: 40 ounce
*I love this stuff & as a pet parent keep it on hand at all times. Back in my fish keeper days it was a must have (& will be again when I get around to reviving my aquaria passion) for now I use it in my cat litter odor mix* Cat Litter Robot's friend We use a Litter Robot & needed an extended odor additive due to the litter lasting longer than your normal pan litter. I am very happy w/ the longevity, smell, dust level, weight, clumping speed/hardness, poop odor blocking, ammonia blocking, etc of our current set up. We have 8 cats, all fixed, 2 boys & 6 girls. 2 Litter Robots (adding a 3rd next year), a tote litter box, & a short tote litter box in their isolation enclosure. W/ this setup we only have to change the litter in the Robots if one of the cats get a sick tummy or when we do a deep clean on the Litter Robot itself. The pans need a full empty maybe every 2 months. Our mixed litters - roughly 4-6 boxes every 2 months: Purina Tidy Cats Lightweight 4-in-1 Strength Clumping Cat Litter Purina Tidy Cats Lightweight Glade Extra Strength, Scented, Clumping Cat Litter Our additive mix (Literally just dump all of the below in a little tote & shake it) - one batch lasts roughly 6 months: Dr. Elsey's Ultra Litter Attractant, .56 Kg / 20 Oz (Pack May Vary) Fresh Step Cat Litter Crystals - Cat Litter Box Deodorizer Product for All Cats - Combats Cat Odors and Neutralizes Smells - Multiple Scents and Size Packs - Cat Box Deodorizer, Litter Deodorizer - 3 pack Ultra Pet Clumping Crystal Cat Litter, White Crystals with Multicolor Crystals, 5 Lbs Nature's Miracle Just for Cats Odor Destroyer (x2) Marineland White Diamond 50 Ounces, Removes Toxic Ammonia, aquarium Filter Media MarineLand Diamond Media Premium Activated Carbon, Blacks & Grays, 40-Ounce (PA0373) ... show more
Reviewed in the United States on December 18, 2021 by Steve + Gabri

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