# Cartridge filter bio ball insert MARINA Aqua Natura TN-45165 Ø32 mm PP

**URL:** https://aio.lv/en/product--marina-tn-45165--12027957
**Data updated:** 2026-03-12 16:36 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** MARINA
**Manufacturer code:** TN-45165
**EAN:** 5904479451651
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 2.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--marina-tn-45165--12027957

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

MARINA Aqua Natura TN-45165 is a polypropylene (PP) bio ball filter cartridge with a 32 mm diameter designed as a replacement insert for compatible aquarium filtration systems. The cartridge provides biological filtration support by offering surface area for beneficial bacteria, helping maintain water quality in tanks. Suitable for routine cartridge replacement and aquarium maintenance.

## Long description

MARINA Aqua Natura TN-45165 Ø32 mm PP is a polypropylene bio ball cartridge designed as a replacement insert for compatible aquarium filtration systems. The cartridge provides a porous structure that increases surface area for colonization by nitrifying bacteria, supporting biological filtration and contributing to stable water parameters in freshwater tanks. Its 32 mm diameter and PP material make it suitable for routine cartridge replacement and simple maintenance.
Advantages
The bio ball insert is made from durable polypropylene, offering chemical resistance and stable porosity that resists compression over time. Its rounded bio ball geometry increases available surface area while maintaining high water flow-through, which helps sustain bacterial colonies that process ammonia and nitrite. Designed for easy insertion and removal, the cartridge simplifies routine maintenance without tools.
Suitable for
 Replacement biological media in compatible aquarium filter cartridges with Ø32 mm fittings
 Freshwater community and planted aquariums needing stable biological filtration
 Routine aquarium maintenance and cartridge media refresh
Key specifications
 Material: polypropylene (PP)
 Shape: bio ball insert with porous structure
 Diameter: 32 mm
 Function: biological filtration media to support nitrifying bacteria
 Compatibility: designed as a drop-in replacement for filters accepting Ø32 mm PP bio ball cartridges
How to use
Remove the existing cartridge from the filter according to the filter manufacturer’s instructions. Rinse the new bio ball insert briefly with conditioned aquarium water to remove dust from manufacturing; avoid using tap water with chlorine. Insert the cartridge into the filter housing ensuring a secure fit with the Ø32 mm opening, then reassemble the filter and restart it. Monitor water parameters after replacement to ensure biological balance re-establishes; do not wash the bio media aggressively to preserve beneficial bacteria.
Usage recommendations
Replace the bio ball cartridge as part of regular maintenance intervals recommended for your specific aquarium and filtration setup. When performing partial maintenance, stagger replacements to avoid sudden decreases in biological filtration. If possible, retain a small amount of old filter media to help reseed the new cartridge and shorten recovery time.

## FAQ

### How much does the MARINA Aqua Natura TN-45165 filter cartridge Ø32 mm cost, and is it available for purchase?

The price is 2.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All MARINA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MARINA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12027957/67515940_large.webp