Boyu · Mains
CJY Series Air Pump
- Air output
- 1–15 L/min
Anyone wanting adjustable aeration, from a nano sponge filter up to a multi-tank air line.
7 models
SunSun · Mains
SunSun DY and HDY Electromagnetic Air Pump
Linear diaphragm air pumps from 20 to 50 L/min, efficient for their output. The HJZ-30 in the range can also run from 12 V DC.
Updated
20–50 L/min9 models
Will it suit my tank?
litres
Best for
Fish rooms and shrimp racks running many sponge filters from one pump.
Worth knowing
Overkill for one planted tank; a small CP or CT pump is plenty.
What stands out
- 20 to 50 L/min
- 8 to 25 W
- Up to 32 kPa
- HJZ-30 runs on 220 V AC or 12 V DC
Models and specs
| Model | Air output | Power | Dimensions (L × W × H) | Rated pressure | Max pressure |
|---|---|---|---|---|---|
| DY-20-A | 20 L/min | 8 W | 12.9 × 11.7 × 6.7 cm | 10 kPa | 25 kPa |
| DY-30-A | 30 L/min | 16 W | 15.2 × 13 × 7.6 cm | 10 kPa | 30 kPa |
| DY-50-A | 50 L/min | 25 W | 15.9 × 14.6 × 8.7 cm | 12 kPa | 32 kPa |
| DY-20-B | 20 L/min | 8 W | 12.9 × 11.7 × 6.7 cm | 10 kPa | 25 kPa |
| DY-30-B | 30 L/min | 16 W | 13.2 × 13 × 7.6 cm | 10 kPa | 30 kPa |
| DY-50-B | 50 L/min | 25 W | 13.4 × 14.6 × 8.7 cm | 12 kPa | 32 kPa |
| HDY-20 | 20 L/min | 8 W | 17.5 × 14.2 × 10.3 cm | 10 kPa | 25 kPa |
| HDY-30 | 30 L/min | 16 W | 20 × 16.7 × 11 cm | 10 kPa | 30 kPa |
| HJZ-30 | 20 L/min | 12 W | 26.8 × 20 × 14.1 cm | 10 kPa | 25 kPa |
Figures from the maker's published specifications. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all air pumps
Boyu · Mains
S Series Air Pump
- Air output
- 4–12.8 L/min
Budget aeration for one tank, or the S-4000B for a small rack of breeder tanks.
4 models
Boyu · Mains
SC Series Air Pump
- Air output
- 3.2–6 L/min
Small to medium tanks running one or two sponge filters or air stones.
2 models
Boyu · Mains
SE Series Air Pump
- Air output
- 2–7 L/min
Nano to medium tanks where a quiet, low-power pump is the priority.
4 models
Frequently asked questions
Quick answers about the SunSun DY and HDY Electromagnetic Air Pump, drawn from its specs.
Who is the SunSun DY and HDY Electromagnetic Air Pump best for?
Fish rooms and shrimp racks running many sponge filters from one pump.
Is there anything to watch out for with the SunSun DY and HDY Electromagnetic Air Pump?
Overkill for one planted tank; a small CP or CT pump is plenty.
What are the alternatives to the SunSun DY and HDY Electromagnetic Air Pump?
Other air pumps worth comparing: Boyu CJY Series Air Pump, Boyu S Series Air Pump, Boyu SC Series Air Pump. Add any of them to the compare table to see the specs side by side.
What sizes does the SunSun DY and HDY Electromagnetic Air Pump come in?
9 options: DY-20-A, DY-30-A, DY-50-A, DY-20-B, DY-30-B, DY-50-B, HDY-20, HDY-30, HJZ-30.