Airstone Vario M – 250 mm
Step up from the compact S to the medium M — the Airstone Vario M delivers the same fine-bubble quality across 250 mm of coverage, making it the right choice for standard aquariums where broader aeration matters.
What Makes This Product Special
At 25 cm, the Vario M strikes the ideal balance between coverage and flexibility. Long enough to create a meaningful bubble curtain across a mid-sized tank, compact enough to be discreetly positioned along the back wall without dominating the setup. The sintered material ensures consistently fine bubbles — not the large, inefficient ones you get from cheaper stones.
Key Benefits
- 250 mm length — ideal for 60–150 L aquariums
- Fine, uniform bubbles — maximum oxygenation efficiency
- Sintered mineral body — long-lasting and washable
- Modular — extend coverage by connecting multiple units
- Standard 4 mm airline tubing connection
- Freshwater and saltwater compatible
- Decorative bubble curtain effect
How to Use
Soak in water for 15 minutes before first use. Connect to air pump with 4 mm airline tubing and position along the aquarium floor. Use a flow valve to adjust bubble density.
Who Is It For
Aquarists with medium-sized tanks (60–150 L) who want effective, reliable oxygenation, and those looking to create a decorative bubble curtain in their display setup.
Technical Specifications
- Length: 250 mm
- Type: cylindrical sintered air stone
- Airline connection: 4 mm
- Bubble size: fine
- Material: sintered mineral
Expert Tip
Pair the Vario M with a quality air pump with an integrated flow adjuster. A consistent, moderate airflow produces the finest and most even bubble distribution — too much pressure creates large, coarse bubbles that lose oxygenation efficiency.
