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Your cart is empty.Periodically maintaining filter cartridges in your aquarium filter is important to ensure your tank remains healthy and properly filtered for your aquarium plants, fish and shrimp. These filter cartridges are specifically made to fit your NICREW Slim Filter perfectly.
Nurse101
August 28, 2025
Great price for these. They do the job
Nonta
June 18, 2025
We use this filter for our betta tank. They work great And they're easier to find than the original water filter we purchased at Petco.
Kathi
June 17, 2025
These filter cartridges looked fine. However I was attempting to find a cartridge that would work in an unusual aquarium filter. These were not compatible
Tracy
June 15, 2025
Bought the pump for my shrimp nano tank. This fits perfectly. Keeps tank crystal clear
DEM
June 10, 2025
Works great and fast.
L David U
June 6, 2025
Easy filter changes, keep water crystal clear and a bargain. No complaints here
Janice M. Rowland
June 1, 2025
The pump is no good. The filter cartridges are ok
Willow
May 22, 2025
Product in perfect condition
Cassiopeia
May 17, 2025
I love the Finnex aquarium filters at Amazon, but they don't have their own replacement filters. I found these NICREW Replacement Filter Cartridges fit perfectly! The price is very reasonable, but if you want to extend the use of the cartridge, you can rinse it once or twice and reuse. (This depends on how often you do a water change, and how much poop your particular fish produce. lol)
Cody macklem
May 6, 2025
Easy to use and swap out for my water filter in beta tank.
Boj
May 5, 2025
Works perfectly fine
Juan C.
April 27, 2025
My fishes love it... The aquarium is clean all time.
Carol-Ann Harris
April 23, 2025
Good quality, easy assembled and product came quick and well packaged. My little betta is quite happy with new filter.
Nurse101
April 18, 2025
Great price for these. They do the job
Nonta
April 14, 2025
We use this filter for our betta tank. They work great And they're easier to find than the original water filter we purchased at Petco.
Kathi
April 3, 2025
These filter cartridges looked fine. However I was attempting to find a cartridge that would work in an unusual aquarium filter. These were not compatible
Tracy
March 18, 2025
Bought the pump for my shrimp nano tank. This fits perfectly. Keeps tank crystal clear
DEM
March 13, 2025
Works great and fast.
L David U
March 13, 2025
Easy filter changes, keep water crystal clear and a bargain. No complaints here
Janice M. Rowland
February 17, 2025
The pump is no good. The filter cartridges are ok
Willow
February 15, 2025
Product in perfect condition
Cassiopeia
January 30, 2025
I love the Finnex aquarium filters at Amazon, but they don't have their own replacement filters. I found these NICREW Replacement Filter Cartridges fit perfectly! The price is very reasonable, but if you want to extend the use of the cartridge, you can rinse it once or twice and reuse. (This depends on how often you do a water change, and how much poop your particular fish produce. lol)
Cody macklem
January 16, 2025
Easy to use and swap out for my water filter in beta tank.
Boj
January 9, 2025
Works perfectly fine
Juan C.
January 5, 2025
My fishes love it... The aquarium is clean all time.
Carol-Ann Harris
December 18, 2024
Good quality, easy assembled and product came quick and well packaged. My little betta is quite happy with new filter.
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