Smooth, steady bubbles for happy fish
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Give your tank a gentle boost of fresh oxygen.
This Aquarium Air Stone Bubble Bar brings soft, fine bubbles to your freshwater or planted tank. It helps raise oxygen levels, supports your fish and plants, and keeps water moving in a calm, natural way. Just connect it to your 4 mm airline tubing and enjoy a healthier, livelier aquarium.
Easy setup, soothing bubbles, and a tank that feels alive.
✔ Adds gentle oxygen to your aquarium
✔ Creates fine bubble flow for healthier fish
✔ Works with any standard air pump
✔ Made from durable mineral material
✔ Great for planted and freshwater tanks
Available in sizes from 4 to 16 inches. Simply rinse when needed to keep bubbles flowing strong.
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.
Will this fit my current airline tubing?
Yes, it connects to standard 4 mm airline tubing used in most home aquariums.
Is it safe for planted tanks?
Yes, the fine bubbles help boost oxygen levels without disturbing plants.
Can I reuse the air stone?
Yes, it’s made from durable mineral material and can be rinsed and reused.
Creates steady, fine bubbles that help your fish breathe easier.
Adds gentle water movement that helps plants thrive.
Keeps water from becoming still so your tank feels more natural.
Mineral material holds up well to regular use and cleaning.
Connects quickly to 4 mm airline tubing and works with any air pump.
A simple upgrade that brings smoother bubbles and a happier tank.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Fits standard 4 mm tubing | ||
| Fine bubble output | ||
| Durable mineral material | ||
| Reusable after cleaning | ||
| Steady water circulation | ||
| Green base with blue stone | ||
| Multiple sizes available | ||
| Great for planted tanks | ||
| Smooth, quiet bubble flow | ||
| Easy setup with any air pump |
Just connect it to your 4 mm airline tubing and place it where you want bubbles. Then turn on your air pump.
No, it works with any standard aquarium air pump.
Rinse it whenever the bubble flow slows down to keep it working well.
Yes, just pick the bar size that fits your tank best.
Yes, it’s safe for continuous use with a proper air pump.
The fine bubbles are gentle and most fish enjoy the added movement.
You can place it lightly under substrate as long as bubbles can still escape.
No, the green base and blue stone are just visual details and won’t affect water quality.
Yes, the added oxygen can help keep water healthier in small aquaponics setups.
