Beschreibung
Airstone Vario M 250 mm – Fine Bubble Air Stone for Medium Aquarium Oxygenation
The Airstone Vario M (250 mm) is a medium-length cylindrical air stone designed to deliver efficient, fine-bubble aeration across a wider section of the aquarium floor. At 250 mm (25 cm), it creates a longer bubble curtain compared to the compact S version, making it ideal for medium-sized tanks where broader water column coverage is beneficial for fish health, water circulation, and visual effect.
Product Overview
The Vario M uses the same high-quality sintered mineral material as the Vario S, producing consistently fine, uniform bubbles that rise slowly through the water column for maximum oxygen dissolution. Its modular design allows end-to-end connection with other Vario airstones, enabling the creation of extended bubble walls of any length.
Key Benefits
- 250 mm length — ideal coverage for medium tanks (60–150 L range)
- Fine, uniform bubble production — maximum oxygen transfer per liter of air
- Durable sintered mineral body — long service life, washable
- Modular connection — chain multiple units for extended bubble walls
- Standard 4 mm airline connection
- Creates even water circulation across a broader tank width
- Suitable for freshwater and saltwater aquariums
- Decorative visual effect — natural-looking bubble curtain
Technical Features
- Length: 250 mm
- Type: cylindrical sintered air stone
- Airline connection: 4 mm (standard)
- Bubble size: fine
- Material: sintered mineral (ceramic-type porous stone)
- Modular end connection (end cap removable)
Aquarium Applications
- Oxygenation for medium fish-only tanks (60–150 L)
- Back-wall bubble curtain in display aquariums
- Nighttime aeration for planted tanks (60–120 L)
- Breeding and fry tanks requiring gentle, broad aeration
- Marine tanks benefiting from fine-bubble surface agitation
- Koi and ornamental pond supplementary aeration
Compatibility
- All standard aquarium air pumps
- 4 mm inner diameter airline tubing
- Freshwater and marine aquariums
- Series-connectable with Airstone Vario S and L units
Expert Recommendations
For optimal oxygenation, position the Vario M along the rear wall of the aquarium, partially buried in substrate. Use with an adjustable flow valve to fine-tune bubble density. In planted tanks, connect to a timer to activate only during the night period.
