# Air stone Tetra AS 40 for aquarium aeration, compatible with Tetra APS air pumps

**URL:** https://aio.lv/en/product--tetra-07119--12068075
**Data updated:** 2026-04-01 09:47 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** Tetra
**Manufacturer code:** 07119
**EAN:** 4004218603561
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 4.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tetra-07119--12068075

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Tetra AS 40 is an aquarium air stone designed to disperse airflow into fine bubbles for improved oxygenation and circulation. Compatible with Tetra APS air pumps, it connects to standard airline tubing and is intended for use in freshwater and planted tanks to enhance gas exchange and water movement. Suitable for aeration, surface agitation and supporting biological filtration.

## Long description

Tetra AS 40 is an air stone for aquarium aeration that produces a fine, even stream of bubbles to improve oxygen transfer and water circulation. Designed for use in freshwater and planted tanks, the air stone connects to standard airline tubing and is compatible with Tetra APS air pumps. Its fine-porous structure promotes efficient gas exchange at the water surface while maintaining low back pressure on the pump.
Advantages
The fine-pored construction ensures uniform bubble size and full utilisation of pump output with minimal pressure resistance. Manufactured from durable materials, the air stone resists clogging and maintains performance over extended periods. Compatibility with common airline tubing and Tetra APS air pumps allows easy integration into existing aquarium setups.
Suitable for
Aeration and oxygenation of freshwater aquariums
Surface agitation to improve gas exchange
Supporting biological filtration by enhancing water movement
Planted tanks where gentle circulation is required
Key specifications
Fine-pored design for uniform, small bubble output
Low pressure resistance to maximise air pump performance
Durable, clog-resistant construction
Connects to standard 4–6 mm airline tubing
Suitable for freshwater and planted aquarium environments
How to use
Connect the air stone to standard airline tubing and attach the tubing to a compatible air pump. Position the air stone at the desired location on the aquarium substrate or secure it with tubing clips so bubbles rise freely. Use a check valve or air control valve in the line if required to regulate airflow or prevent backflow. Periodically inspect the air stone for reduced bubble output and clean or replace it if performance declines.
Usage recommendations
For consistent performance, operate the air stone with an air pump sized appropriately for the tank volume; regular gentle cleaning will extend service life. Avoid placing the air stone directly against large decorative items or dense plant growth that may block bubble dispersion.

## Specifications

| Feature | Value |
|---|---|
| Compatible products | Tetra APS Air Pumps |
| Product type | Air stone |

## FAQ

### How much does the Air stone Tetra AS 40 cost, and is it available for purchase?

The price is 4.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 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 03.07.2026 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 Tetra 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 Tetra 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/12068075/67585556_large.webp