# sera Alder Cones 50 pcs – aquarium natural filter media for biological filtration

**URL:** https://aio.lv/en/product--sera-se-32276--12268239
**Data updated:** 2026-04-16 14:14 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** SE-32276
**EAN:** 4001942452465
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-se-32276--12268239

## 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

Natural alder cones from sera, supplied as a pack of 50 pieces for aquarium use. Used as biologically active filter media to support beneficial bacterial colonization, improve water quality and create natural tannin release for softening and slight acidification. Suitable for freshwater aquaria, shrimp tanks and biotope setups that require natural décor and water conditioning.

## Long description

sera Alder Cones 50 pcs are natural alder cones supplied as a pack of fifty pieces for aquarium use. These cones serve as biologically active filter media that support colonization by beneficial bacteria, contribute to a gentle release of tannins, and help soften water and slightly lower pH. They are intended for freshwater aquaria, shrimp tanks and biotope setups where natural decor and subtle water conditioning are desired.
Advantages
The product is made from untreated natural alder cones, offering a stable porous surface for bacterial biofilm formation and gradual tannin leaching without synthetic additives. Because they are lightweight and compact, they can be placed inside filters, media bags or directly in the aquarium to provide long-term biological filtration support. Their neutral visual appearance also complements natural aquascapes and shrimp habitats.
Suitable for
 Freshwater community aquaria with soft to moderately hard water
 Shrimp tanks and planted tanks requiring gentle water conditioning
 Biotope and natural-style aquascapes that aim for tannin-stained water
 Internal or external filter compartments and media bags for biological filtration
When it may not be suitable
These alder cones gradually release tannins and can slightly lower pH and soften water; they may not be suitable for aquaria that require strictly neutral or hard, highly alkaline water parameters. Because they are natural materials, individual cones may vary in size and appearance and will change the water color mildly over time.
Key specifications
 Quantity per pack: 50 pieces
 Material: natural alder cones, untreated
 Application: biological filter media and natural decor
 Effects on water: gradual tannin release, mild softening, slight acidification
 Compatibility: freshwater aquaria, shrimp tanks, biotope setups
How to use
Rinse cones briefly with aquarium water or dechlorinated water before first use to remove loose debris. Place cones in filter compartments, media bags or directly on the substrate or hardscape. Monitor water parameters during initial weeks of use to assess tannin release and pH changes; remove some cones if staining or parameter shifts exceed desired values. Replace cones when they become overly degraded or if biological performance declines.
What to consider before purchase
 Intended water parameters: suitable for tanks where mild softening and tannin staining are acceptable
 Tank inhabitants: ensure shrimp and fish species tolerate reduced pH and tannin-stained water
 Placement options: measure filter or media bag space to confirm fit
 Visual effect: natural brown tinting of water over time
Usage recommendations
For steady biological support, distribute the alder cones between filter media and a separate media bag to balance water contact and reduce heavy staining. Start with a smaller number of cones and increase gradually while monitoring pH and water clarity to achieve the desired balance between biological activity and aesthetic effect.

## FAQ

### How much does the sera Alder Cones 50 pcs cost, and is it available for purchase?

The price is 9.99 € (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 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/12268239/68186227_large.webp