Airstone Vario M (250 mm)
Trusted by 500+ aquascapers
- Wider coverage for 60 to 150 L tanks
- Fine bubbles for efficient oxygen transfer
- Keeps water gently circulating
- Sintered body washes clean and lasts
- Link units for a longer bubble wall
Airstone Vario M (250 mm) is backordered and will ship as soon as it is back in stock.
Fast delivery (1–5 days EU)
Carefully packed and protected
Tips from real aquascapers
Airstone Vario M (250 mm)
Airstone Vario M (250 mm) is backordered and will ship as soon as it is back in stock.
Description
Description
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.
FAQ
What makes Aquarium Boutique different from mass-market stores?
What makes Aquarium Boutique different from mass-market stores?
We don't sell everything — we sell only carefully selected products, personally tested. Every item is chosen with a clear purpose: to work well and last long. You don't need to guess about quality — we've already done that for you.
Do you ship to my country?
Do you ship to my country?
Yes, we ship across all of Europe. For Bulgaria we work with BOX NOW and Speedy — fast and reliable home or locker delivery. For other EU countries we use international courier services.
How quickly will I receive my order?
How quickly will I receive my order?
For orders within Bulgaria, we typically deliver within 1–3 business days. For other EU countries — usually 3–7 business days depending on location.
Can I return a product if I'm not satisfied?
Can I return a product if I'm not satisfied?
Yes. If something doesn't meet your expectations — contact us. We have a clear and fair return policy. Your satisfaction matters to us and we will find a solution.
Do you offer advice on product selection?
Do you offer advice on product selection?
Absolutely. Our team keeps aquariums and knows the products personally. Write to us — we'll help you choose the right solution for your tank, budget and experience level.
Are your products tested and approved?
Are your products tested and approved?
Yes. Every product in our store has gone through our personal selection and testing process . We only work with trusted brands and don't list products we don't believe in.
What payment methods do you accept?
What payment methods do you accept?
We accept all major payment methods — credit and debit cards, PayPal, and cash on delivery for Bulgaria. All payments are secure and encrypted.
How can I track my order?
How can I track my order?
After your order ships, you'll receive an email with a tracking link. You can follow the status in real time directly through the courier's website.
