# AquaNatura Top Filter TN-45203, external/upper-mounted aquarium filter, 2500 l/h, black

**URL:** https://aio.lv/en/product--aquanatura-tn-45203--12397965
**Data updated:** 2026-04-27 22:31 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** AquaNatura
**Manufacturer code:** TN-45203
**EAN:** 5904479452030
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--aquanatura-tn-45203--12397965

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

AquaNatura TN-45203 is a top/upper-mounted aquarium filter in black with a flow rate of 2500 l/h. Designed for mechanical and biological filtration, it mounts on the tank rim and suits freshwater and marine aquariums. Practical for water circulation, debris removal and supporting beneficial bacteria in medium to large tanks.

## Long description

The AquaNatura Top Filter TN-45203 is an external upper-mounted aquarium filter in black with a reported flow rate of 2500 l/h. Designed to clamp onto the tank rim, it provides mechanical and biological filtration to help maintain water clarity and support beneficial bacterial colonies. The unit is suitable for both freshwater and marine aquaria and is intended for medium to large tanks where reliable circulation and debris removal are required.
Advantages
This top-mounted filter offers an efficient flow rate that promotes good water turnover and oxygenation. Its design concentrates on mechanical removal of particulates and providing media space for biological filtration, which supports stable nitrogen cycling. Installation on the tank rim keeps the main glass area unobstructed while making routine media access and maintenance straightforward.
Suitable for
Medium to large freshwater aquariums requiring increased circulation and filtration
Marine tanks where surface-mounted filtration and biological media capacity are needed
Tanks where easy access to filter media and periodic cleaning from above is preferred
When it may not be suitable
Because this is a top/upper-mounted unit, it requires sufficient rim width and clearance above the aquarium; very narrow or covered tanks may not accommodate mounting. Extremely small nano tanks or setups needing ultra-quiet, fully hidden canister solutions may find this style less appropriate.
Key specifications
Flow rate: 2500 litres per hour
Mounting type: top / upper-mounted on aquarium rim
Filtration type: mechanical and biological
Color: black
Suitable water types: freshwater and marine
Intended tank size: medium to large aquariums
How to use
Mount the filter on the aquarium rim following the manufacturer’s mounting points and ensure it sits securely and level. Fill the filter housing with the recommended mechanical and biological media, position the intake and outflow according to desired circulation patterns, and connect to power. Prime the unit if required, then run and observe flow and noise levels, adjusting positioning to avoid surface splashing. Regularly inspect and clean mechanical media to prevent clogging and replace or rinse biological media carefully to retain beneficial bacteria.
What to consider before purchase
Check aquarium rim width and available clearance above the tank for secure mounting
Confirm that a 2500 l/h flow rate suits the bio-load and inhabitants of your aquarium
Consider compatibility with freshwater versus marine setups and the types of filter media you plan to use
Usage recommendations
For balanced results, combine mechanical media to capture debris with porous biological media to support nitrifying bacteria. Monitor flow and clean mechanical media on a schedule that matches your tank’s waste production to maintain consistent water quality.

## FAQ

### How much does the AquaNatura Top Filter TN-45203 2500 l/h cost, and is it available for purchase?

The price is 18.49 € (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 30.07.2026 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 AquaNatura 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 AquaNatura 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