6pcs Filter Cartridges Compatible with Topfin Top Fin EF-S & BF5 BETTAFLO, 3.7×2.1 Inch Fish Tank Filter Cartridge Replacement for Aquarium Water Filtration
$8.99
Price: $8.99
(as of Nov 02, 2025 08:24:41 UTC – Details)
Specification:
Color: white, black
Material: APS, activated carbon
Product Size: 9.5×5.5cm/3.74×2.17 inch
Package details:
6 x aquarium filter cartridge
Note:
Due to manual measurement, the size and weight may have a certain error.
Due to the difference between different monitors, there may be a slight color difference existed.
Package Content: You will receive 6 pieces of fish tank filter cartridge replacements. Sufficient quantity will meet your daily use and replacement needs.
Compatibility: These filter cartridges are compatible with Top Fin EF-S, BF5 BETTAFLO filter and desktop aquariums. Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including Top Fin.
Product Material: Our filter cartridge replacements are made of premium APS and activated carbon, which can effectively remove impurities, promoting a healthier aquatic environment and clear water.
Easy Installation: Simply rinse the new cartridge to clean loose carbon particles, then insert into the filter chamber. Make sure the cartridge fits completely into the filter chamber.
Optimal Replacement Schedule: It’s recommended to replace the filter cartridge every 2-4 weeks to keep your aquarium water consistently clean and safe for fish and other aquatic life.
6 reviews for 6pcs Filter Cartridges Compatible with Topfin Top Fin EF-S & BF5 BETTAFLO, 3.7×2.1 Inch Fish Tank Filter Cartridge Replacement for Aquarium Water Filtration
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$8.99
Carmalita –
Perfect fit and great quality
These filter cartridges fit my Top Fin tank perfectly and keep the water clean and clear. Easy to install and a good value for the price. Highly recommend!
Missi –
A great value
Perfect fit, good quality and a great value for your money
Krista –
Perfect
Works perfectly with our betas filter!
Annie –
Exactly as described
These filters fit in my topfin filtration system. They are just like the name brand. They work great to keep the water clean. They offer sufficient thickness. They are easy to install. The price is right for 6 of them.
BK –
Easy to install, but the effect is average
The filter is okay and generally keeps the water clear, but the effect isn’t particularly noticeable. Installation is easy, but the material feels average, and after a while, it needs frequent replacement to maintain water quality. The quantity is sufficient, but the overall quality is average, making it suitable for daily emergency use.
Ramanda Hinton –
Bad product
I didn’t get the product as I thought.