Steady Bubbles for Happy Fish
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A simple way to boost oxygen and keep your tank lively.
These Mini Cylinder Air Stones bring steady, fine bubbles to your aquarium or aquaculture setup. They help your fish breathe easier, keep water moving, and support a clean, healthy tank. Compact, durable, and ready to pair with any standard air pump.
Small size, big impact.
✔ Improves oxygen flow for healthier fish
✔ Keeps water gently circulating
✔ Works with most air pumps
✔ Great for aquariums and aquaculture setups
Rinse before first use and clean as needed to remove buildup. Compact cylinder design fits most small to medium aquarium layouts.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
Are these air stones safe for all fish?
Yes, they produce soft, fine bubbles that work well for most freshwater and aquaculture fish.
Fine bubbles help keep oxygen levels steady so your fish stay active and healthy.
Gently moves water to support a cleaner, clearer aquarium.
Small cylinder shape fits neatly in corners or behind décor.
Mineral sand body and secure plastic connector offer long-lasting use.
Great for home aquariums, aquaculture systems, and fish transport tanks.
Simple, steady performance that helps every tank thrive.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Fine bubble oxygenation | ||
| Durable mineral sand build | ||
| Steady bubble output | ||
| Compact cylinder design | ||
| Easy pump compatibility | ||
| Great for aquaculture setups | ||
| Smooth water circulation | ||
| Reliable day‑to‑day performance | ||
| Multiple pack options |
Simply connect the plastic connector to standard aquarium air tubing and attach to your pump.
Yes, they are suitable for most freshwater and saltwater aeration needs.
Replace when bubble output becomes weak, usually after long-term use.
The stones themselves are quiet; overall noise depends on your air pump.
Yes, they can be placed under gravel or décor as long as airflow is not blocked.
Their gentle circulation supports a cleaner, fresher-looking aquarium.
They are available in blue and grey.
You can choose between packs of 5 or 10 air stones.
Yes, simply use more stones or pair them with a stronger air pump.
