# Aquastar aeration stone cylinder 3.8×1.5 cm – aquarium air diffuser

**URL:** https://aio.lv/en/product--aquastar-ah-9604--12103365
**Data updated:** 2026-03-20 09:53 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Aquastar
**Manufacturer code:** AH-9604
**EAN:** 015561109604
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--aquastar-ah-9604--12103365

## 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

Aquastar aeration stone in a cylindrical shape, size 3.8×1.5 cm, designed as an aquarium air diffuser. Made for producing fine bubbles from an external air pump or air line, it improves oxygenation and water circulation in tanks. Suitable for freshwater and marine setups, sponge support, and small to medium aquaria aeration tasks.

## Long description

Aquastar aeration stone cylinder 3.8×1.5 cm is a compact aquarium air diffuser engineered to produce a steady stream of fine bubbles from an external air pump or airline. The cylindrical porous stone increases oxygen transfer and promotes gentle water circulation without strong currents, making it suitable for supporting biological filtration media such as sponges and for general aeration tasks in small to medium freshwater and marine tanks.
Advantages
The porous ceramic construction delivers consistently fine bubbles for improved oxygenation and quieter operation compared with larger diffusers. Its small, cylindrical form factor fits easily inside a variety of aquarium setups and can be positioned near substrate, decorations, or sponge filters. The durable material resists clogging under normal use and provides long-lasting performance when used with properly filtered air.
Suitable for
 Aeration of small and medium freshwater aquaria
 Support of sponge filters and biological filter media
 Supplemental oxygenation in planted tanks and marine nano aquaria
 Gentle water circulation for fry tanks and shrimp setups
Key specifications
 Shape: Cylindrical aeration stone
 Dimensions: 3.8 × 1.5 cm
 Material: Porous ceramic (diffusive stone)
 Compatibility: Works with standard aquarium air pumps and airline tubing
 Suitable environments: Freshwater and marine aquaria
How to use
Attach one end of the airline tubing to a regulated aquarium air pump and the other end to the aeration stone; secure connections to avoid air leaks. Place the cylinder on the aquarium substrate or mount it near sponge filters or plant areas where gentle circulation is desired. Adjust pump output or use an in-line valve to control bubble size and flow rate for the intended application. Periodically inspect the stone for clogging and clean or replace it if bubble output decreases significantly.
Usage recommendations
For optimal performance, use a pre-filter or air-line check valve to prevent water backflow and minimize impurities reaching the stone. Clean the aeration stone by soaking in dechlorinated water and gently brushing if necessary; avoid harsh chemicals. Select an air pump with adjustable flow that matches tank size to maintain gentle circulation without stressing livestock.

## FAQ

### How much does the Aquastar aeration stone cylinder 3.8×1.5 cm cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 Aquastar 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 Aquastar 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/12103365/67634928_large.webp