# Canister Filter Hagen Fluval C4 by Hagen — external aquarium filtration unit

**URL:** https://aio.lv/en/product--hagen-vat005331--12053965
**Data updated:** 2026-03-12 19:37 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Hagen
**Manufacturer code:** VAT005331
**EAN:** 015561140034
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 84.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 69.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hagen-vat005331--12053965

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Hagen Fluval C4 is an external canister-style aquarium filter designed for mechanical, chemical and biological filtration. The unit provides multi-stage media support and external placement to save tank space. It is intended for freshwater and saltwater aquaria where reliable circulation, water clarification and media flexibility are required for routine maintenance and water quality management.

## Long description

Hagen Fluval C4 is an external canister filter engineered for mechanical, chemical and biological filtration of freshwater and saltwater aquaria. The unit installs outside the tank to save internal space and provides a multi-stage media platform to accommodate sponges, carbon, biomedia and other filtration materials. Designed to deliver steady circulation and support water clarity, the Fluval C4 offers configurable flow and media options for routine maintenance and water quality management.
Advantages
The external canister design reduces clutter inside the aquarium and simplifies media access for cleaning and replacement. Multi-stage filtration chambers allow separate placement of mechanical, chemical and biological media to optimize filtration efficiency. The unit is compatible with a range of filtration media types and provides adjustable flow control to match different aquarium volumes and stocking levels. Materials and seals are engineered for leak-resistant operation and long-term reliability.
Suitable for
 Freshwater community aquaria requiring reliable filtration and water circulation
 Marine and reef systems where external media flexibility is needed
 Planted tanks that benefit from stable biological filtration and gentle flow
 Aquaria where tank space must be preserved and maintenance access improved
Key specifications
 Filtration stages: multi-chamber design supporting mechanical, chemical and biological media
 Placement: external canister to free internal tank space
 Flow control: adjustable output to regulate circulation rate
 Media compatibility: accepts sponges, activated carbon, biomedia and other cartridge materials
 Connections: external inlet and outlet plumbing for flexible installation
 Suitable water types: freshwater and saltwater aquaria
How to use
Position the canister filter on a stable surface below the aquarium or in a location recommended by the aquarium setup. Assemble the internal baskets with the selected filtration media: start with mechanical media (sponges) in the first chamber, followed by chemical media if required, and biological media in the final chamber to maximize beneficial bacteria colonization. Connect inlet and outlet hoses to the tank using appropriate fittings and prime the unit as instructed by the manufacturer before powering on. Adjust the flow control to achieve the desired water movement while monitoring tank inhabitants and water clarity. Perform routine inspection and scheduled maintenance, cleaning mechanical media and replacing chemical media as needed to maintain performance.
Usage recommendations
For best results, match the filtration media to the aquarium’s bioload and water chemistry needs: use fine mechanical media for heavily stocked tanks, activated carbon for odor and discoloration control, and ample biological media for stable nitrogen cycling. Regularly inspect seals and connections for wear and service the unit according to the maintenance schedule to ensure consistent operation.

## FAQ

### How much does the Hagen Fluval C4 canister aquarium filter cost, and is it available for purchase?

The price is 84.49 € (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 09.07.2026 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 Hagen Fluval C4 canister aquarium filter 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 Hagen 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 Hagen 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/12053965/67540030_large.webp