Aquarium Air Stones & Bubble Curtains

Shop aquarium air stones, diffuser bars and flexible bubble curtains for compatible freshwater and marine setups. Current options include small stones, discs, bars and long flexible diffusers in several sizes, subject to stock.

An air stone breaks supplied air into bubbles and helps create water movement. It needs a separate air pump, correctly sized airline and enough pressure for the aquarium depth and diffuser resistance.

Choosing an Aquarium Air Stone

Match the diffuser size and resistance to the air pump. A longer curtain or finer diffuser can require more pressure than a small stone, especially in deeper water.

  • Check the airline connection size.
  • Confirm the pump can drive the diffuser at the intended depth.
  • Choose a shape and length suited to the available space.
  • Use an aquarium check valve where back-siphon protection is needed.

Air Stones and Diffuser Bars

Small stones provide a compact bubble source, while bars and discs spread air across a wider area. Bubble size and uniformity depend on the material, airflow, depth and condition of the diffuser.

Flexible Bubble Curtains

Flexible diffusers can follow a curved layout or create a longer line of bubbles. Secure them without sharp bends and avoid burying them in a way that blocks airflow.

Surface Movement and Gas Exchange

The useful aeration effect comes largely from circulation and surface agitation. Position the diffuser so it improves movement without creating excessive turbulence for the livestock.

Installation and Cleaning

Connect the diffuser with suitable airline tubing and install it as directed. Use a correctly oriented check valve when the pump sits below the waterline.

Mineral and biological buildup can restrict airflow. Clean or replace the diffuser according to its instructions rather than increasing pump output indefinitely.

Related Categories

Pair air stones with aquarium air pumps, airline tubing and suitable battery air pumps.

Buy Aquarium Air Stones & Bubble Curtains Online in Australia

Compare air stones and curtains by size, shape, connection and airflow demand. Shop online Australia-wide or visit Aquaholics on the Sunshine Coast.

Frequently Asked Questions

Do air stones need an air pump?

Yes. An air stone is a diffuser and needs a compatible pump, airline and sufficient pressure.

Do air stones oxygenate aquarium water?

They support gas exchange mainly by moving water and disturbing the surface. The result depends on placement and circulation.

Why are bubbles weaker at one end of an air curtain?

The pump may lack pressure, the curtain may be restricted or bent, or the diffuser may be partly blocked.

Can I use any airline with an air stone?

Use tubing that fits the diffuser and pump connections securely. Check the stated size.

When should an air stone be replaced?

Replace it when cleaning no longer restores even airflow or when the material or connection is damaged.

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