Your cart is empty.
Your cart is empty.
Specifically designed for Fluval Spec, Evo and Flex Aquariums, Fluval Spec/Evo/Flex Activated Carbon provides effective chemical filtration, removing heavy metals, odors, discolorations and pollutants from aquarium water. The research grade carbon has large amounts of surface area for the adsorption of impurities. Fluval Spec/Evo/Flex Activated Carbon effectively removes heavy metals, odors, discolorations and pollutants, leaving your aquarium water crystal clear and sparkling.
For more fish tank accessories, check out other Fluval products including aquarium filters, aquarium heaters, aquarium air pumps, aquarium lights, aquarium rocks, aquarium thermometers, and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, saltwater tank or freshwater tank. Fluval broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.
Mykl H
2025-09-05 14:30:14
Nothing more nothing less as I expected. Item is as described and works fine.
Bonnie Boe
2025-09-02 09:02:27
Fluval is the maker of my marine tank and these are the activated carbon filters that I need to change every two months or so. Excellent price for the pack of the and cleared the cloudy water within an hour.
Kaitlyn G.
2025-08-28 12:26:39
We decided to do a deep clean four days ago on our saltwater tank. After the clean it did not return to its previous state of crystal clear water and appeared very cloudy with white particles. We assumed that we had kicked up some funk in the sand and created a bacteria bloom. This was the first time we have encountered this, so we did our research and decided we needed to over oxygenate the water, and then add fine filtration to the system.When this first started we did a water change, and added a fresh zorb pack to help clear the tank. That with increased aeration seemed to help but was not making quick enough progress to settle our nerves. After four days of waiting for the cloudy water to clear, we decided to add these active carbon filters to the mix! After a good rinse we added these to the filter and OVER NIGHT they seemed to have completely cleared up the tank!It was a relief to wake up to clear water and happy fish! Overall the cure to the bacteria bloom seemed to be these active carbon filters, and water aeration (we added a new bubbler)! These are an affordable option that did the trick and arrived as expected! They are small, but I just used two in my filter to create full coverage. We will keep these on hand and incorporate these into our tank maintenance moving forward for crystal clear water!
Arnie B.
2025-08-25 11:07:04
If you calculate the cost per ounce of carbon, at $1.17 per ounce these Fluval activated carbon bags seem to be one of the lowest cost name brands And the HOB filters I'm putting them in are Fluval and great. So I figure these are good But I'm not sure if they are as effective as the much more expensive Seachem activated carbon But the Seachem was a 6 ounce bag, which cleared the brownish color of the water, but at $22 costs too much to replace each month. Which reminds me, its time to change them.
Wallys
2025-08-08 17:00:41
Can’t go wrong, I use it to clean up any impurities in the water, plus great for knocking out ammonia levels
SLovelace
2025-07-02 13:47:52
Works perfectly in aquarium filter.
papaya
2025-06-20 17:07:56
Worked very well for my 5 gallon shrimp tank
RSouther
2025-06-09 13:01:04
My husband and I have been going through crummy fish tank after lousy fish tank for four years now. About three months ago we found a Fluval at the local Pet Co. Though initially skeptical (and put off by the price), we decided to go for it, because it looked sleek and well-made. The product did not disappoint. We are now big Fluval fans and we will be buying their products exclusively in the future. The tank is clean, sleek, fits perfectly where we want it, bright, and quiet. And the refills on the filters are cheap enough to keep us regularly buying them (instead of procrastinating because they are too expensive). I cannot say enough good stuff about this fish tank.
Chris van Voorst
2025-05-31 11:13:46
A quality product that doesn't cost too much. I have one carbon sack inside my XL tank filter system, and one carbon sack tucked undernethe my low-flo betta tank filter. Sure, a black carbon cube would look better in the betta tank, but I already had purchased this 3-pack. Feedback is, the betta tank is benefiting from having the carbon sack in the tank.
Kerem
2025-05-17 17:44:07
Fluval 34l akvaryumdaki karbon filtre ömrü dolduğu için aldım. Hem fiyat çok uygun hem de görevini iyi bir şekilde yapıyor.
Lee Neville
2025-04-02 18:55:59
Fits and works perfectly
B
2025-01-02 17:48:16
Good quality carbon and bag,ideal for inserting inside filter.
Elbert Tan
2024-12-14 18:07:51
Good product for the aquarium’s water quality.
Recommended Products
