Sumo Amphibious Water Pump

• Amphibious mounting – runs wet (fully submersed) or dry (external, plumbed in-line), so one pump design covers both sump and cabinet installs.
• Epoxy-encapsulated electronics – the motor windings are sealed in epoxy resin rather than just gasketed, which is what lets the same unit run either wet or dry.
• Ceramic shaft – resists the corrosion that a stainless or brass shaft eventually suffers in saltwater.
• Overheat protection – the motor cuts out before it overheats if it's ever run dry or jammed.
• Five sizes on one page – 1,200 through 7,500 L/h rated flow, covering everything from a display return to a large sump.

AquaZonic does not publish voltage, cable length, outlet thread size or a dB noise figure for this range, so those fields are left off this page rather than guessed – check the pump body or box for the rating plate if you need the exact voltage.

Rated flow is measured at zero head – a bucket test, not a real installation. Pick a size with enough rated flow that it still clears your target turnover after head loss from your plumbing:

• No 1 (1,200 L/h): nano and small tank returns with a short lift.
• No 2 (1,800 L/h) – small to medium display returns and low sumps.
• No 3 (3,000 L/h) – mid-size systems with moderate plumbing runs.
• No 4 (5,000 L/h) – larger systems, or installs with more head height to overcome.
• No 5 (7,500 L/h) – the largest systems in the range, or setups needing high turnover after significant head loss.

AquaZonic publishes two reference points for each Sumo pump – rated flow at effectively zero head, and the maximum head at which flow reaches zero – rather than a full multi-point curve. We've published exactly those two points below and haven't interpolated the values in between, because the true shape of that curve isn't published and guessing at it would be worse than leaving it out.

As a rule of thumb, expect actual delivered flow through a typical sump plumbing run – an elbow or two and a metre or so of vertical lift – to sit well below the rated bucket-test figure, more so on the taller-lift No 4 and No 5.

• Suitable for: marine and freshwater display returns, sump return pumps, and general circulation, mounted wet or dry.
• Suitable for: continuous 24-hour running – these are designed as always-on return pumps, not intermittent-duty units.
• Not suitable for: installations needing a controllable or variable-speed pump – this range runs at a single fixed output.
• Not suitable for: installs where a confirmed AU voltage rating is required before purchase – check the unit's rating plate or ask us to confirm before you buy, since AquaZonic doesn't publish it online.

Keep the intake strainer clear of debris – a partially blocked intake is the most common cause of reduced flow on any submersible pump. Rinse the ceramic shaft and impeller housing periodically, and check it spins freely by hand after any extended period out of the water.

Mains-powered and designed for continuous submersed or dry-mounted operation. Isolate power before servicing, and connect through a residual current device (RCD/safety switch) if your installation doesn't already run through one – standard practice for any aquarium pump.

Covered by the manufacturer's warranty in addition to your rights under the Australian Consumer Law. Standard freight.

Can I mount this pump outside the sump instead of submersing it?

Yes. The Sumo range is described as amphibious, meaning the epoxy-encapsulated electronics are sealed for both wet (submersed) and dry (external, in-line) mounting.

Which size do I need for a 1.2 m lift to my display?

Rated flow is measured at zero head, so a pump lifting water 1.2 m will deliver noticeably less than its rated L/h figure. AquaZonic doesn't publish the exact flow at 1.2 m for this range, so size up rather than choosing the pump that just meets your target flow on paper.

Is this pump reef safe?

The listed materials – epoxy-encapsulated electronics and a ceramic shaft – are the same construction used across marine-rated return pumps generally, and the range is listed as suitable for marine or freshwater use.

Does it come with a flow controller?

No – this range runs at a fixed single output and doesn't include or support a separate flow controller.

What voltage does it run on?

AquaZonic does not publish a voltage rating for this range on any source we could verify. Check the pump body's rating plate, or contact us before you buy if you need it confirmed in advance.