IOAOI Nano Aquarium Return Pump, 185GPH DC 12V with Adjustable Flow Controller

IOAOI Nano Return Pump is an indoor aquarium sump return pump for moving water in freshwater or saltwater setups, delivering 700L/H (185GPH) with 9 watts of power.

• DC 12V operation — provides powered water circulation for an aquarium sump return setup.
• Three controller modes — choose constant flow, wave making, or feeding mode.
• Adjustable flow from gears 1 to 10 — set the waterflow to one of ten levels.
• Sound below 28 dB — the pump is designed so that only the sound of flowing water can be heard.
• Ceramic shaft with graphite inside and no metal — made for freshwater or saltwater use without rusting.
• Low-water operation with dry-burning protection — supports operation when the water level is low.

A return pump moves water as part of an aquarium sump setup. This small pump is intended for indoor use and suits aquarists who want adjustable flow and controller modes in a compact-format pump. Its listed output and power consumption make the key operating figures easy to compare when choosing a return pump for a setup.

What flow settings and modes does the IOAOI Nano Return Pump offer?

The controller provides constant, wave-making, and feeding modes, with flow adjustable across gears 1 to 10. This gives you multiple settings for changing the pump’s waterflow without relying on a single fixed setting. The pump operates at DC 12V and uses 9 watts while delivering 700L/H (185GPH).

• Controller with three modes.
• Ten adjustable flow gears, from 1 to 10.
• Rated flow: 700L/H (185GPH).

Can the IOAOI Nano Return Pump be used in saltwater?

Yes, the pump is suitable for both saltwater and freshwater aquariums. It has no metal components and uses a ceramic shaft with graphite added inside; the design is stated to resist rust. The pump is for indoor use only, so it is intended for indoor aquarium setups.

• For freshwater or saltwater.
• Ceramic shaft with graphite inside.
• Indoor use only.

What size is the pump, and what comes with it?

The pump measures 2.1 × 2.1 × 4.5 inches (5.33 × 5.33 × 11.43 cm) and has two nozzles, measuring 0.6 inches (1.52 cm) and 0.45 inches (1.14 cm). It also has a 9-foot (2.74 m) power cord. Compare the pump’s dimensions and nozzle sizes with the space and connections in your sump setup.

• Pump dimensions: 2.1 × 2.1 × 4.5 inches (5.33 × 5.33 × 11.43 cm).
• Two nozzle sizes: 0.6 inches (1.52 cm) and 0.45 inches (1.14 cm).
• Power cord length: 9 feet (2.74 m).

The IOAOI Nano Return Pump is suited to indoor freshwater or saltwater aquarium owners who need an adjustable sump return pump with three controller modes and low-water operation with dry-burning protection. Its 700L/H (185GPH) output, defined dimensions, and two nozzle sizes make its flow and fit straightforward to assess for an indoor aquarium setup.

Read our guide: Aquascaping a freshwater tank: substrate, stone, wood and light