Strong, Steady Air for Happy Fish
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Give your aquarium a smooth and steady oxygen boost.
The SOBO SB-738 Dual Outlet Oxygen Pump keeps fresh air flowing through your aquarium so your fish, shrimp, and plants can thrive. It offers strong airflow, simple controls, and a compact design that fits neatly into any setup. A great choice for hobbyists who want reliable oxygenation for tanks around 50–60cm.
Easy to use and built to support healthy water life.
✔ Dual outlets for two air stones or filters
✔ Adjustable output for the right oxygen level
✔ Strong airflow up to 2 × 3.4L/min
✔ Compact, durable build
✔ Great for freshwater and marine tanks
Place the pump above water level or use check valves. Keep it dry and clean the air stones when needed. Works best for tanks around 50–60cm.
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.
Is this pump suitable for a 50–60cm tank?
Yes. It is designed to provide strong and steady oxygenation for tanks in that size range.
The dual outlets help move air through the tank for smoother water circulation.
Fine-tune the oxygen level so your fish and plants stay comfortable.
Run two air stones or filters at once for balanced tank coverage.
Enjoy steady air delivery up to 2 × 3.4L/min for daily tank care.
The sturdy plastic housing fits easily into your setup and works with 110–240V.
More control, stronger airflow, and better coverage for your tank.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Basic oxygenation | ||
| Dual outlet air support | ||
| Adjustable airflow control | ||
| Strong airflow up to 2 × 3.4L/min | ||
| Supports two air stones | ||
| Durable plastic housing | ||
| Wide voltage compatibility | ||
| Designed for 50–60cm tanks |
It runs with a gentle hum that blends into normal room sounds.
Yes. It works well for both freshwater and marine aquariums.
They are included and help prevent water from flowing back into the pump.
Connect the tubing, attach air stones, plug it in, and adjust the airflow as needed.
Yes. It is designed for continuous use to keep your tank oxygenated.
Yes. The strong airflow makes it a good match for sponge filters.
No. Just keep the pump dry and clean or replace the air stones when needed.
It uses only 3.5W, which is very low for daily aquarium use.
Yes, as long as the tubing is not too long to reduce airflow noticeably.
