# Aquarium Gravel Sera Gravel British Brown 4–8 mm 10 kg

**URL:** https://aio.lv/en/product--sera-eb-9530--12058609
**Data updated:** 2026-03-12 19:42 (EET)
**Category:** Other goods
**Manufacturer:** sera
**Manufacturer code:** EB-9530
**EAN:** 4047059449530
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-eb-9530--12058609

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

Sera Gravel British Brown is aquarium gravel with grain size 4–8 mm supplied in a 10 kg bag. It serves as a substrate for freshwater tanks, providing stable anchoring for plants and decoration, aiding biological filtration by offering surface area for beneficial bacteria, and improving tank aesthetics with natural brown tones.

## Long description

Sera Gravel British Brown 4–8 mm is a natural‑looking aquarium substrate supplied in a 10 kg bag and designed for freshwater tanks. The medium grain size creates a stable base for plants and decorations while contributing additional surface area for beneficial nitrifying bacteria. Its brown tones provide a neutral, natural backdrop that complements aquatic plants, rocks and driftwood and helps to visually unify tank layouts without influencing water chemistry.
Advantages
The 4–8 mm grain size balances stability and porosity: individual grains are large enough to prevent excessive compaction while small enough to support plant roots and allow water flow. The gravel’s natural brown coloration offers consistent aesthetics and conceals debris between cleanings. As an inert mineral substrate, it does not dissolve or alter pH and hardness under normal aquarium conditions. Packaged in a 10 kg bag, it is suitable for covering moderate areas or creating layered substrate zones.
Suitable for
 Freshwater community aquariums
 Planted tanks with root-feeding plants
 Tanks with rock and driftwood aquascapes
 Biological filtration support by providing surface area for bacteria
Key specifications
 Grain size: 4–8 mm
 Colour: British brown / natural brown tones
 Weight per bag: 10 kg
 Intended use: freshwater aquaria substrate
 Physical behaviour: inert mineral gravel, low soluble components
How to use
Rinse gravel thoroughly in running water until the rinse water is clear to remove dust and fines before adding to the aquarium. Spread an even layer across the tank floor; recommended depth is typically 2–4 cm for ornamental setups and deeper for planted aquaria where root penetration is required. Place heavier decorations and plants after substrate is positioned to avoid disturbing settled layers. When performing maintenance, use gentle gravel vacuuming to remove surface detritus without removing the entire substrate layer.
Usage recommendations
For planted tanks with demanding species, consider combining this gravel with nutrient‑rich substrate layers or root tabs to ensure long‑term plant nutrition. When establishing a new aquarium, cycle the tank before adding sensitive fish and monitor water parameters after setup. Avoid mixing with substrates that actively change water chemistry if stable pH and hardness are required.

## FAQ

### How much does the Sera Gravel British Brown 4–8 mm 10 kg cost, and is it available for purchase?

The price is 11.49 € (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 04.08.2026 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/12058609/67544341_large.webp