Description
xMarina Bio Clear Cartridge for Slim Filters
The Marina 12-pack Bio Clear Cartridge blends Zeolite and Ceramitek into a convenient, disposable unit for use with Marina S10, S15, and S20 Power Filters. While no product can guarantee perfect water, this cartridge duo is designed to support a steady environment in goldfish tanks by addressing common water-quality challenges and simplifying routine maintenance. Each cartridge is built for quick replacement, helping you keep a familiar care rhythm without disrupting your filter’s beneficial bacteria.
In everyday use, you’ll notice how the mix of filtration media works together: the Zeolite portion targets ammonia-related compounds, while the Ceramitek medium provides a highly porous surface that supports ongoing biological filtration. With regular changes every two weeks, you can maintain a consistent filtration cycle and stay aligned with best-practice tank care for smaller, more active fish environments.
How it works
- Zeolite acts as an adsorbent for ammonia and related compounds, potentially helping to ease stress on fish and maintain water quality.
- Ceramitek’s porous ceramic matrix offers abundant surface area for beneficial bacteria to thrive, supporting ongoing biological filtration.
What’s in the 12-pack
- 12 disposable cartridges designed for Marina Slim Filters, ready for quick swaps.
- Designed for compatibility with Marina S10, S15, and S20 models for streamlined setup.
- Each cartridge combines Zeolite and Ceramitek to purify water and support a stable tank ecosystem.
Usage tips
- Replace cartridges every two weeks to maintain a familiar filtration rhythm and consistent media exposure.
- Avoid changing all cartridges at once to help preserve beneficial bacteria in the filter.
- Store unused cartridges in a cool, dry place and dispose of spent units responsibly.
Ideal for goldfish setups that value reliable filtration in compact systems, the Marina Bio Clear cartridges offer a straightforward way to maintain a water-feel and clarity that many hobbyists appreciate. Pair with regular partial water changes and routine tank care for a well-rounded approach to small-to-medium goldfish environments.
FAQ
Q: What does the Marina Bio Clear cartridge do?
A: It combines Zeolite and Ceramitek to support filtration in goldfish tanks and may help manage ammonia-related water quality.
Q: How often should I replace these cartridges?
A: Replace every two weeks, and avoid changing all cartridges at once to preserve beneficial bacteria.
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.
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