# External Aquarium Filter sera Filtr Zewnętrzny Bioactive\* 250 (model 30178)

**URL:** https://aio.lv/en/product--sera-30178--12044372
**Data updated:** 2026-03-12 19:26 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 30178
**EAN:** 4001942306034
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 164.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 136.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-30178--12044372

## 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

External aquarium filter sera Filtr Zewnętrzny Bioactive\* 250 (MPN 30178) is a canister-style filtration unit designed for freshwater and marine tanks. It provides mechanical and biological filtration with space for media to maintain water quality and support beneficial bacteria. Suitable for hobbyists seeking an externally mounted solution for reliable circulation, aeration and waste removal.

## Long description

The sera Filtr Zewnętrzny Bioactive 250 is an external canister aquarium filter designed to provide mechanical and biological filtration for freshwater and marine tanks. Built for continuous operation, this canister-style unit offers a compact footprint while accommodating filter media to remove debris, reduce organic load and support nitrifying bacteria. The filter is intended for hobbyists who prefer an externally mounted solution that maintains clear water, reliable circulation and stable oxygenation.
Advantages
This external filter combines mechanical pre-filtration with a biological chamber that supports colonisation of beneficial bacteria, enabling effective removal of suspended particles and biological breakdown of ammonia and nitrite. The canister design keeps filtration equipment outside the tank for quieter operation and easier access during maintenance. The unit is compatible with a variety of standard filter media, allowing configuration for specific tank needs such as high bio-load, planted aquaria or saltwater setups.
Suitable for
 Freshwater community aquaria
 Planted tanks requiring stable biological filtration
 Marine and reef tanks with appropriate media choices
 Hobbyists seeking external filtration and reduced in-tank equipment
Key specifications
 Canister-style external filter with multi-stage filtration chamber
 Designed for mechanical and biological filtration
 Capacity for interchangeable filter media (sponge, ceramic, bio-balls, etc.)
 Suitable for continuous operation with quiet external motor
 Inlet and outlet fittings for hose connection and adjustable flow
How to use
Install the sera Bioactive 250 outside the aquarium on a stable surface below tank level, connect inlet and outlet hoses to the corresponding fittings and prime the unit following the manufacturer’s priming procedure. Arrange chosen filter media inside the chambers according to the desired filtration sequence, typically placing coarse mechanical media first, then finer mechanical layers and biological media last. Start the unit and check for correct flow, leaks and secure hose connections. During initial setup monitor water parameters closely while biological colonisation establishes.
Usage recommendations
Perform regular maintenance by rinsing mechanical media in dechlorinated water or tank water to preserve beneficial bacteria, replace or rejuvenate media according to manufacturer guidance, and inspect hoses and seals for wear. Adjust media composition to match stocking levels and whether the aquarium is freshwater, planted or marine. Monitor flow and water quality regularly to ensure the external filter supports a stable aquarium environment.

## FAQ

### How much does the External Aquarium Filter sera Bioactive\* 250 cost, and is it available for purchase?

The price is 164.99 € (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, Installment. All transactions are 100% secure and encrypted.

### Can External Aquarium Filter sera Bioactive\* 250 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/12044372/67531125_large.webp