Description:
Air stones are one of the simplest and most effective ways to increase dissolved oxygen in an aquarium or pond. Connected to an air pump via standard airline tubing, they break the air flow into a stream of fine bubbles that rise through the water column, increasing surface area and boosting oxygen exchange. The result is better oxygenation for your fish, more stable conditions for your beneficial bacteria, and improved overall water circulation.
Beyond oxygenation, the gentle water movement created by an air stone reduces surface film build-up, and creates a visually appealing bubble effect that many aquarists enjoy as part of their tank aesthetic.
These black air stones are made from high-quality, non-toxic stone material and fit most standard 4mm airline tubing connectors. Each pack contains 10 air stones, giving you plenty for multiple tanks or to replace worn stones across your setup over time.
Requires an air pump and airline tubing to operate, sold separately.
Suitable for freshwater and saltwater aquariums, ponds, and bio-farming applications.
Product Features:
- Boosts dissolved oxygen for healthier, happier fish
- Supports efficient aeration and circulation
- Ideal for aquariums, ponds, and bio-farming applications
- Long-lasting design for continuous use
- Fits most standard air tubing connectors
Product Specifications:
- Suitable for: Fish tanks & aquariums
- Connector Size: 0.40 × 0.25 cm (Outer Dia × Inner Dia)
- Material: High-quality, non-toxic stone
- Quantity: 10 pieces per pack
Items Included:
- 10 x Air Stone
Air Stone - Black - 10PCS
Air Stone - Black - 10PCS
Low stock: 4 left
Everything about shipping, specifications and warranties is just below.
Why Shop With Us — Our Guarantee & Shipping Info
Why Shop With Us — Our Guarantee & Shipping Info
✅ Quality Products - Reliable aquarium supplies for your setup.
🚚 Standard Shipping ($11.95 - $19.95) - Safe & reliable delivery, arrives within 3-10 business days. Shipping cost: $11.95 small orders, $14.95 medium orders, $16.95 large orders, $19.95 bulk orders.
🛡️ Warranty Support - Most eligible equipment and accessories are backed by a 1-year manufacturer warranty, with claims handled through us.
🔄 Easy Returns - Most unopened dry goods can be returned within 14 days for change of mind, subject to our return conditions.
🤝 Trusted Couriers - Reliable delivery at a great rate.
💬 Expert Support - Got Questions? Chat with us anytime for advice!
🐟 Adding fish to your order? - Fish, Food and Plants ship separately from our dry goods collections with our Live Arrival Guarantee. When ordering from both our dry goods and fish/food/plant collections, both shipping fees will apply (example: $30 fish & food + $11.95 dry goods = $41.95 total).
👉 For more details visit our Shipping page.
Tips Before You Buy — Product Guidance
Tips Before You Buy — Product Guidance
💡 Unsure which product is right for your tank? Visit our Education section or Blogs for help choosing the best equipment.
🐟 Beginners can start with: How to set up your aquarium, while everyone can check out Aquarium Maintenance & Care for ongoing tank tips!
🌿 Not all products are suitable for every tank size - Double-check dimensions and specifications before purchasing.
✍️ If you’re stuck: Reach out through our chat, we’re always happy to help!
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How the Air Stones Compare
💨 Air Stones
- 🫧Creates Fine Bubbles: Breaks incoming air into smaller bubbles, increasing the contact between the air and surrounding water as the bubbles rise.
- 💧Supports Oxygen Exchange: The rising bubbles and resulting surface movement help promote gas exchange between the aquarium water and atmosphere.
- 🌊Gentle Water Movement: Creates continuous movement through the water column while providing aeration.
- 🦠Supports Biological Filtration: Good oxygen availability is important for the beneficial bacteria responsible for biological filtration.
- 📦10 per Pack: Includes ten air stones for use across multiple tanks or as replacements when required.
🔵 Air Pump Without an Air Stone
- 💨Air Still Requires a Diffusion Point: An air pump needs an outlet or connected device to introduce air into the aquarium water.
- 🫧Larger Air Bubbles: Without a fine-bubble diffuser, air may enter the water in larger bubbles with less surface area for air-to-water contact.
- 💧Less Distributed Aeration: Air may be released from a single outlet rather than being dispersed through a stream of fine bubbles.
- 🌊Different Water Movement: The amount and pattern of circulation depends on how the air is introduced into the aquarium.
- 🔧Less Fine Control: Adding an air stone provides a simple way to change how the air is dispersed through the water.
Air stones are one of those inexpensive accessories that make a genuine difference to water quality and fish health. We recommend them as a standard addition to any tank running an air pump, and they're particularly useful in breeding setups, hospital tanks, and any situation where you want to maximise oxygen levels without adding another powered filter to the setup.
Air stones gradually clog with mineral deposits and algae over time, which reduces bubble output and puts strain on your air pump. Soak in a diluted white vinegar solution periodically to dissolve mineral build-up, then rinse thoroughly in dechlorinated water before returning to the tank. Replace when output drops noticeably even after cleaning.
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