Boyu · Water / return pump
FP Series Submersible Pump
- Flow
- 300–1,350 L/h
- Power
- 5–19 W
Adding gentle, spread-out circulation to a medium tank or powering a simple internal filter.
4 models
Oase · Water / return pump
Oase OptiMax
A range of adjustable water pumps from 300 to 5,000 L/h, for circulation, running a DIY filter or returning water from a sump. The smaller models are submersible only, while the 800 and up can also run dry outside the tank. Flow is adjustable on every model.
Updated
300–5,000 L/h5–82 W8 models
Will it suit my tank?
litres
Best for
Sump returns, DIY filters, water changes or extra circulation in a larger planted tank.
Worth knowing
The 2000 and up draw 30 to 80 W, which adds up on your bill and adds heat to the water if submerged.
What stands out
- Eight sizes from 300 to 5,000 L/h
- Adjustable flow on all models
- 800 and larger can be installed dry (inline) or submerged
- Suction feet for secure placement
Models and specs
| Model | Flow | Max head | Power | Installation |
|---|---|---|---|---|
| 30042670 | 300 L/h | 0.6 m | 5 W | Underwater only |
| 50042671 | 500 L/h | 0.8 m | 5 W | Underwater only |
| 80042672 | 800 L/h | 1 m | 7 W | – |
| 100042673 | 1,000 L/h | 1.3 m | 12 W | – |
| 200042674 | 2,000 L/h | 2.4 m | 31.5 W | – |
| 300042675 | 2,800 L/h | 3 m | 55 W | – |
| 400042676 | 4,400 L/h | 3 m | 80 W | – |
| 500042677 | 5,000 L/h | 3 m | 82 W | – |
- Brand
- Oase
- Connections
- 13 mm (300, 500), 17 mm (800 and up)
- Installation
- Submersible; 800 and up also dry
- Cable length
- 1.5 m
Figures from Charterhouse Aquatics's product listing. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all pumps
Boyu · Water / return pump
PGB Series Submersible Pump
- Flow
- 740–1,565 L/h
- Power
- 12.5–28 W
Undergravel plates, sump returns or DIY top filters that need decent head in a narrow space.
3 models
Boyu · Water / return pump
SP-100 / SP-101 Series Powerhead
- Flow
- 300–1,850 L/h
- Power
- 4.5–35 W
Anyone needing a cheap general-purpose pump for circulation, a DIY filter or a small sump return.
9 models
Boyu · Water / return pump
SP-1000 Series Submersible Pump
- Flow
- 300–1,400 L/h
- Power
- 8–34 W
Small sump returns, DIY filters and general water moving jobs around the fish room.
5 models
Frequently asked questions
Quick answers about the Oase OptiMax, drawn from its specs.
Who is the Oase OptiMax best for?
Sump returns, DIY filters, water changes or extra circulation in a larger planted tank.
Is there anything to watch out for with the Oase OptiMax?
The 2000 and up draw 30 to 80 W, which adds up on your bill and adds heat to the water if submerged.
What are the alternatives to the Oase OptiMax?
Other pumps worth comparing: Boyu FP Series Submersible Pump, Boyu PGB Series Submersible Pump, Boyu SP-100 / SP-101 Series Powerhead. Add any of them to the compare table to see the specs side by side.
What sizes does the Oase OptiMax come in?
8 options: 300, 500, 800, 1000, 2000, 3000, 4000, 5000.