# Air stone Tetra AS 30 by Tetra — aquarium air diffuser stone, model AS 30

**URL:** https://aio.lv/en/product--tetra-07118--12069779
**Data updated:** 2026-03-12 21:48 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Tetra
**Manufacturer code:** 07118
**EAN:** 4004218603523
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Tetra AS 30 air stone is an aquarium air diffuser stone designed to produce fine bubbles for improved oxygenation and water circulation. Compatible with standard aquarium air pumps, this AS 30 model provides gentle aeration for freshwater and saltwater tanks, helps reduce dead zones, and supports gas exchange and biological filtration efficiency.

## Long description

Tetra AS 30 air stone is an aquarium air diffuser stone engineered to produce a steady stream of fine bubbles for improved oxygenation and enhanced water circulation. Designed for compatibility with standard aquarium air pumps, the AS 30 model delivers gentle aeration suitable for both freshwater and marine setups. Its fine-porous surface helps disperse air into many small bubbles, supporting gas exchange at the water surface and aiding effective biological filtration without strong currents.
Advantages
The porous construction creates uniform, fine bubbles that increase dissolved oxygen levels and reduce localized dead zones. Compact and simple to install, the diffuser operates quietly and requires minimal maintenance. Materials are selected to withstand continuous contact with aquarium water and deliver consistent performance over time.
Suitable for
Freshwater community tanks requiring improved surface agitation and oxygenation
Saltwater aquaria where gentle aeration is preferred to avoid disturbing corals or invertebrates
Planted tanks where enhanced gas exchange supports biological filtration
Small to medium aquariums connected to standard external air pumps
Key specifications
Function: produces fine bubbles for aeration and circulation
Compatibility: designed for use with standard aquarium air pumps and tubing
Application: suitable for freshwater and marine environments
Design: compact, low-flow diffuser for gentle water movement
Maintenance: washable surface to restore porosity when needed
How to use
Connect the Tetra AS 30 air stone to an air pump using appropriate aquarium tubing, ensuring a secure fit to prevent air leakage. Place the diffuser in the desired location in the aquarium—on the substrate or discreetly behind decorations—to obtain optimal bubble dispersion. Adjust the air pump output to achieve a gentle steady stream of fine bubbles; avoid excessive airflow that may create strong currents. Periodically check and clean the stone if bubble size increases or output decreases.
Usage recommendations
For best results, position the air stone where circulation is needed most and combine with proper filtration. Rinse or gently brush the surface during routine maintenance to maintain fine-porous performance. Select pump output appropriate to tank size to balance aeration with minimal disturbance to inhabitants.

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### 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?

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