# Two-piece fish corner/angle filter or accessory by Hagen KOTNIK (model 931)

**URL:** https://aio.lv/en/product--hagen-008927--12035851
**Data updated:** 2026-03-12 16:44 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Hagen
**Manufacturer code:** 008927
**EAN:** 015561109314
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hagen-008927--12035851

## 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

Two-piece Hagen KOTNIK component (model 931) designed for aquarium fish use. This accessory provides a corner/angle installation solution compatible with aquarium setups, facilitating secure placement and management of tank elements. Intended for aquarium maintenance and arrangement, it suits hobbyists and professionals seeking modular corner fittings without electrical function.

## Long description

Two-piece fish corner/angle filter or accessory by Hagen KOTNIK (model 931) is a non-electrical aquarium component designed to fit into aquarium corners and angles. Intended as a modular fitting, the two-piece design allows for easy placement and stable integration with tank walls and accessories. This accessory is suitable for organizing equipment or guiding water flow in corner areas without adding powered filtration, and it supports aquarium layout and maintenance tasks for both hobbyists and professionals.
Advantages
The two-piece construction provides flexibility during installation, enabling the accessory to adapt to different corner geometries and simplify attachment to tank panes or structural elements. Made under the Hagen brand, the component is intended to offer reliable mechanical performance for non-powered uses and to help maintain a neat and functional aquarium interior. Its compact form factor reduces visual clutter in corner zones while allowing other filtration or aeration devices to be positioned effectively.
Suitable for
Corner mounting of aquarium accessories and fittings
Organizing tubing, air lines or small in-tank components
Creating discreet attachment points for decorations or partitions
Use in freshwater and saltwater aquaria where non-electrical fittings are preferred
Key specifications
Two-piece modular design for corner or angle installation
Non-electrical accessory intended for mechanical fitting and organization
Compact dimensions suitable for placement in aquarium corners
Compatible with standard aquarium panes and structural fittings
How to use
Position the two-piece accessory in the target corner of the aquarium and assemble the parts so they sit flush against the tank walls. Ensure any sealing surfaces are clean and free of debris before fitting; tighten or secure the pieces according to the accessory geometry so the unit remains stable without strain on tank silicone or seams. Use the accessory to guide small tubing, support lightweight decorations, or create a mounting point for other non-powered components. Regularly inspect the assembly as part of routine aquarium maintenance to confirm it remains correctly seated and free from biological buildup.
Usage recommendations
Do not use this accessory as a replacement for structural or load-bearing elements; avoid attaching heavy items that could stress aquarium walls. For installations near electrical equipment, ensure cables and powered devices are routed and secured separately. Periodic cleaning and inspection will help maintain fit and hygiene—remove the accessory briefly during deep cleaning if necessary.

## FAQ

### How much does the Hagen KOTNIK 931 two-piece fish corner accessory cost, and is it available for purchase?

The price is 9.49 € (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 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 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/12035851/67523176_large.webp