Sobo AC/DC air pump SB-4000

Sobo AC/DC air pump SB-4000

The Sobo AC/DC air pump SB-4000 is a compact and efficient AC/DC air pump designed to deliver continuous aeration, even during power outages. With dual power capability, it runs on mains electricity and automatically switches to battery mode when the power goes out—ensuring your aquarium remains oxygenated at all times.

With a low power consumption of just 2.8W and an output of 2 × 3L/min, it’s ideal for small to medium-sized aquariums.

Key Features:

• Dual Power Operation (AC/DC): Automatically switches to battery mode during outages

• Power Consumption: 2.8W

• Air Output: 2 × 3L/min – provides steady airflow for consistent oxygenation

• Compact & Energy Efficient: Ideal for home aquariums or backup use

• Quiet operation and easy setup

Perfect for maintaining fish health during load-shedding or unexpected outages, the Sobo SB-4000 offers reliable, worry-free performance in any situation.

View our other Sobo products here.

McMerwe’s Review: Smaller and better than the previous model SB 4000’s. For the price, these are fantastic. It is a sobo product which means it won’t last forever, but its a huge improvement in terms of quality. You also don’t have to buy the batteries separately, so this means you will save on cost in the long run even if you had to replace the unit every year. If it came with a charger block it will get a 5/5 rating. [Rating 4.5/5]