# Aeration Stone Trapezoid 15 cm HAPPET (aquarium air stone)

**URL:** https://aio.lv/en/product--happet-011219--12118620
**Data updated:** 2026-03-20 17:58 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** HAPPET
**Manufacturer code:** 011219
**EAN:** 5907708606464
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--happet-011219--12118620

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

HAPPET aeration stone in a trapezoid shape, 15 cm long, designed for aquarium and aquatic environment oxygenation. Connects to an airline to produce fine bubbles that improve water circulation, gas exchange and support biological filtration. Suitable for freshwater and marine tanks, useful for aerobic bacteria activity, plant growth and fish health.

## Long description

HAPPET Aeration Stone Trapezoid 15 cm is a porous aquarium air stone designed to generate fine bubbles and improve oxygenation in freshwater and marine tanks. The trapezoid shape provides an elongated diffusion surface for more even bubble distribution, supporting water circulation and gas exchange. This air stone connects to a standard airline and is intended for continuous or periodic aeration to assist biological filtration and aerobic microorganisms in the tank environment.
Advantages
The trapezoid design increases the effective surface area for air diffusion, producing a steady stream of fine bubbles that enhance oxygen transfer and reduce dead zones in the aquarium. Made from a durable porous material, the stone maintains performance with regular maintenance and is compatible with typical aquarium airline tubing. Its 15 cm length makes it suitable for medium to large tanks, providing balanced aeration without occupying much space.
Suitable for
Freshwater aquariums requiring improved oxygenation and water movement
Marine tanks where stable gas exchange supports animal and plant life
Systems with biological filtration that depend on aerobic bacteria
Planted tanks that benefit from enhanced CO2 distribution and circulation
Air-driven decorations or under-substrate aeration setups
Key specifications
Shape: trapezoid
Length: 15 cm
Material: porous diffusion stone (compatible with aquarium water)
Connection: standard airline compatible
Bubble type: fine bubble diffusion for enhanced oxygen transfer
Suitable for: freshwater and marine environments
How to use
Attach the aeration stone to an airline connected to an air pump or air-driven device, ensuring an airtight connection. Place the stone at the desired position on the tank bottom or hidden beneath substrate, keeping it clear of large debris. Operate the air pump according to tank size and required flow; check bubble output and adjust air pressure or use a valve to regulate aeration. Periodically inspect the stone for clogging and clean by soaking in dechlorinated water and gently rinsing or replacing when diffusion performance declines.
Usage recommendations
Use with an appropriately sized air pump and adjustable valve to control bubble rate; avoid excessive pressure that can cause large bubbles and reduce oxygen transfer efficiency. Regular maintenance—occasional gentle cleaning or replacement—will ensure consistent fine bubble production and help maintain aquarium water quality.

## FAQ

### How much does the HAPPET Aeration Stone Trapezoid 15 cm cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 06.07.2026 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 HAPPET 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 HAPPET 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/12118620/67658165_large.webp