# Bio-ball filter media MARINA TN-45171, Aqua Natura spherical bio ball, 46 mm diameter

**URL:** https://aio.lv/en/product--marina-tn-45171--12253568
**Data updated:** 2026-04-14 14:27 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** MARINA
**Manufacturer code:** TN-45171
**EAN:** 5904479451712
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-20 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-45171--12253568

## 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 spherical bio ball filter media (model TN-45171) — plastic bio-ball with 46 mm diameter designed for aquarium mechanical and biological filtration. Provides large surface area for beneficial bacteria colonization, improves biological nitrification and particulate trapping. Suitable for internal and external filters, biological media in freshwater and marine setups.

## Long description

MARINA Aqua Natura spherical bio ball (46 mm) is a plastic filter media designed to support mechanical and biological filtration in freshwater and marine aquariums. The open spherical shape and textured surface provide an extended area for beneficial nitrifying bacteria to colonize while also trapping suspended particles. The product is compatible with internal and external filter systems and can be used as standalone bio-media or combined with other mechanical and chemical media to create a multi-stage filtration setup.
Advantages
The bio ball offers a large specific surface relative to its size, promoting efficient biological nitrification and faster establishing of stable bacterial colonies. Its durable plastic construction resists degradation in both freshwater and saltwater environments and is easy to rinse for routine maintenance. The spherical design allows good water flow through and around each unit, minimising clogging while retaining particulate matter for subsequent mechanical removal.
Suitable for
 Internal canister and hang-on-back filters requiring biological media
 External sump chambers and refugiums for added bacterial surface area
 Freshwater community tanks and planted aquaria where biological stability is important
 Marine and reef-supporting systems as part of multi-stage filtration (when combined with protein skimmers and live rock)
 Quarantine or hospital tanks where reliable nitrification is required
When it may not be suitable
If space inside the filter is very limited, the 46 mm diameter of each bio ball may reduce the number that can be installed compared with smaller media options. In heavily planted tanks where mechanical filtration is minimal and fine detritus is common, these larger units may not trap the finest particulates as effectively as fine foam or matting media. Additionally, bio balls do not remove dissolved organics or phosphates; chemical media should be used if those removals are required.
Key specifications
 Shape: spherical, open-structured bio ball
 Material: durable aquarium-safe plastic suitable for freshwater and marine use
 Diameter: 46 mm
 Function: mechanical particle trapping and biological surface for nitrifying bacteria
 Flow characteristics: open design allowing water to pass through and around each unit
How to use
Rinse the bio balls in dechlorinated water before first use to remove any manufacturing dust. Place them in the biological stage of your filter, sump, or media chamber where steady water flow can contact the surfaces. Do not saturate with chemical media at the same location; allow water to pass through the bio balls to maintain oxygenation for beneficial bacteria. For initial cycling, monitor ammonia and nitrite levels until stable colonies develop. Clean by gentle rinsing in aquarium water during routine maintenance to avoid removing established bacteria colonies.
What to consider before purchase
 Confirm internal dimensions of your filter or media chamber to ensure 46 mm diameter units will fit
 Decide whether these will be used alone or combined with mechanical/chemical media
 Remember bio balls provide biological filtration but not chemical removal of dissolved substances
 Plan for regular, gentle rinsing rather than aggressive cleaning to preserve bacterial colonies
Usage recommendations
Use MARINA Aqua Natura spherical bio balls as part of a balanced filtration strategy: position them where steady flow and oxygen exchange are present, pair with appropriate mechanical pre-filtration to reduce clogging, and supplement with chemical media when removal of dissolved organics or phosphates is required. Regular monitoring of water parameters during cycling and maintenance will ensure reliable biological performance.

## FAQ

### How much does the MARINA Bio-ball filter media TN-45171, 46 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/12253568/68520288_large.webp