# Internal sponge filter sera L 300 for aquariums, model SE-08535

**URL:** https://aio.lv/en/product--sera-se-08535--11388679
**Data updated:** 2026-03-11 12:05 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** SE-08535
**EAN:** 4001942085359
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-se-08535--11388679

## 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

Internal sponge filter sera L 300 (SE-08535) is a compact aquarium filtration unit designed for biological and mechanical filtration. The sponge element traps debris while providing surface area for beneficial bacteria growth. Suitable for use in freshwater aquariums, it mounts inside the tank and operates with an airlift or small pump to support water circulation and oxygenation.

## Long description

sera internal sponge filter L 300 (model SE-08535) is a compact in-tank filtration unit engineered for combined mechanical and biological filtration in freshwater aquariums. The sponge element traps suspended particles and provides a porous surface for colonisation by nitrifying bacteria. Designed to be used with an airlift system or a small external pump, the filter supports gentle water circulation and oxygenation while remaining unobtrusive inside the aquarium.
Advantages
The open-cell sponge captures debris and prevents clogging of the water column while offering a large surface area for beneficial bacteria, improving biological filtration. Its compact size allows flexible placement inside tanks without reducing swimming space. The filter is compatible with low-flow aeration or small pumps, consuming minimal energy when combined with an efficient air pump or powerhead. Maintenance is simple: the sponge can be rinsed in tank water to preserve bacterial colonies and restored quickly to service.
Suitable for
Small to medium freshwater aquariums requiring internal biological filtration
Breeding tanks and fry tanks where gentle flow is preferred
Planted aquariums that benefit from low-disturbance circulation and oxygenation
Temporary setups, quarantine tanks, and hospital tanks needing easy-to-clean filtration
Key specifications
Filtration type: combined mechanical and biological filtration via sponge media
Placement: internal, fully submerged inside the aquarium
Drive options: compatible with airlift systems or small external pumps/powerheads
Flow characteristics: gentle, low-turbulence water movement suitable for fry and delicate species
Maintenance: removable sponge element that can be rinsed in aquarium water
How to use
Install the sponge filter inside the aquarium in a location that ensures adequate water circulation but does not create strong currents near plants or delicate fish. Connect an airlift tube to a suitable air pump or attach a small pump/powerhead according to the manufacturer’s instructions for the drive device. Adjust the airflow or pump output to obtain a steady, gentle flow through the sponge. During routine maintenance, gently remove the sponge and rinse it in aquarium water to remove accumulated debris while retaining beneficial bacteria; replace the sponge only when it shows signs of irreversible wear.
Usage recommendations
Use with an appropriately sized air pump or low-flow powerhead to maintain gentle circulation. For best biological performance, avoid cleaning the sponge with tap water; instead, rinse it in water taken from the aquarium during a partial water change. Monitor flow and sponge condition regularly and replace the sponge if torn or excessively degraded to maintain filtration efficiency.

## FAQ

### How much does the sera internal sponge filter L 300 SE-08535 cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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/11388679/66030234_large.webp