Description
xCompact tank filtration that fits your setup
Meet Cunina XS replacement filter cartridges, engineered for ultra-compact aquariums. These cartridges are designed to fit Tetra Whisper XS and other small filters, making them ideal for tanks up to 3 gallons. The 6 pack provides a ready supply for regular maintenance without frequent shopping, helping you keep a neat, visually pleasing home for your aquatic life.
Triple filtration for clearer water
Each cartridge combines a dual-layer microfiber outer shell with an activated carbon inner layer. The microfiber captures solid debris and fish waste, while the carbon targets odors and dissolved pollutants. The result is water that appears cleaner between changes and a more stable tank environment for your inhabitants.
- Microfiber outer layer traps debris and waste for steady flow
- Activated carbon inner layer reduces odors and organic compounds
Easy, mess-free installation
Cartridges arrive pre assembled for quick swaps. Replace them without wet hands, which is especially convenient on busy days or when you’re tending several small tanks.
Versatile compatibility for small filters
Designed to work with Tetra Whisper XS and a range of other compact filters, these cartridges offer flexibility for different small tank setups while keeping equipment tidy and unobtrusive.
- Fits tanks up to 3 gallons, with compatibility to select filters up to 4 gallons
- Dual filtration plus activated carbon design supports longer, consistent filtration cycles
Maintenance that fits your routine
Replace every 3 to 4 weeks based on feeding, fish load, and water clarity. The six-pack delivers ongoing supply, helping you maintain a steady filtration rhythm without frequent restocking.
Realistic expectations
These cartridges are designed to support a healthy-looking tank through improved water appearance and odor control. Benefits are presented as possibilities, contingent on your specific setup and maintenance practices.
FAQ
Q: Which filters are Cunina Replacement Filter Cartridges XS compatible with?
A: They fit Tetra Whisper XS and many small filters designed for up to about 3 gallons.
Q: How often should I replace these cartridges?
A: Typically every 3–4 weeks, depending on tank load and water clarity. A 6-pack provides ongoing supply.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.
