# Filter Media Sera Bio\* Fibres Coarse 40 g – Biological Aquarium Biofilter Fill

**URL:** https://aio.lv/en/product--sera-07349--12018622
**Data updated:** 2026-03-11 20:53 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 07349
**EAN:** 4001942084529
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-07349--12018622

## 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

Sera Bio\* Fibres Coarse is a 40 g coarse biological filter media designed for aquarium biofilters. The product provides porous fibre structure to support colonization by nitrifying bacteria, improving biological filtration and water quality. Suitable for use in internal and external aquarium filters to enhance ammonia and nitrite breakdown and support stable aquarium conditions.

## Long description

Sera Bio\* Fibres Coarse 40 g are coarse biological filter media designed for use in aquarium biofilters. The porous fibre structure provides a large surface area that promotes colonization by nitrifying bacteria, supporting the breakdown of ammonia and nitrite and contributing to a stable aquatic environment. The product is suitable for placement in internal and external filters and complements mechanical and chemical filtration stages.
Advantages
The coarse fibre matrix offers high porosity and durability while maintaining water flow through the media. Its physical form resists compaction, ensuring long-term availability of surface area for beneficial bacteria. By encouraging biofilm development, these fibres help maintain biological filtration efficiency and support water quality with minimal maintenance.
Suitable for
Freshwater aquariums requiring improved biological filtration
Saltwater aquariums where biological nitrification is needed
Internal sponge, canister and hang-on filters as an additional biofill
External biofilters and sump systems to increase bacterial colonization area
Key specifications
Net weight: 40 g
Coarse porous fibre structure for enhanced bacterial colonization
Physical form: loose fibres suitable for filter baskets or media chambers
Durability: dimensionally stable, resists compaction under normal flow conditions
Compatibility: suitable for use with mechanical and chemical filtration stages
How to use
Rinse the fibres briefly with aquarium water before installation to remove loose particles. Place the media in a filter basket, media chamber or a fine mesh bag and position it where water flow is steady but not excessively turbulent. Combine with mechanical pre-filtration to reduce clogging and with chemical media if required for specific water treatments. Replace or clean according to the biological load and flow conditions—inspect periodically for heavy fouling.
Usage recommendations
For optimal biological filtration, maintain regular water flow through the media and avoid complete simultaneous replacement of all biological media to preserve established bacterial colonies. Monitor ammonia and nitrite levels during initial biological colonization and after any maintenance to ensure stable water parameters.

## FAQ

### How much does the Sera Bio\* Fibres Coarse 40 g filter media cost, and is it available for purchase?

The price is 9.49 € (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 sera 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 sera 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/12018622/67507109_large.webp