Powerful, Quiet, and Flexible Meet the LANDEN BIOSMO 700 DC Sine Wave Pump, a compact return pump designed for 15 to 37 gallon tanks and beyond

It blends a sealed impeller with sine wave technology to deliver smooth, steady water movement while keeping noise to a minimum—often under 40 dB

With energy efficiency up to 65 percent less than typical pumps, it supports calmer tanks and lower electricity use over time

Power consumption ranges from 2 to 9 watts, depending on mode and flow, ing predictable costs for daily use

Three operating modes and ten flow options let you tailor performance to your setup

An external controller is included for quick adjustments, and two nozzle sizes 1/2 inch and 5/8 inch flexible installation

The lift height reaches 2

5 meters, enabling internal or external use depending on your system design

Maintenance is straightforward

You can remove a cap and separate the impeller in minutes without tools, making routine cleaning simple

The pump uses a ceramic shaft core, carbon fiber sleeve, and a magnetic drive for long life and reliability

It also includes automatic power off protection when there's no water or when the pump blocks, helping safeguard your tank

Versatility at a glance

This pump works with freshwater and saltwater setups, and it is compatible with multiple LANDEN aquarium models

It can be used inside an aquarium, as a return pump in a sump, or in small ponds, fountains, hydroponics, and irrigation systems

The compact form and quiet operation make it suitable for cabinets, desks, or stand-mounted tanks

Why customers like it Ultra quiet operation under 40 dB supports peaceful living spaces

Energy savings up to 65 percent reduce running costs

External control with multiple modes makes on the fly adjustments easy

Two nozzle sizes support multiple plumbing configurations

With its robust construction and wear-resistant materials, the BIOSMO 700 DC is built to endure

Whether used as a conventional internal return or an external loop, this pump flexibility for a variety of aquariums and small outdoor water features

What you get Return pump unit External controller Two nozzle adapters Manual and safety overrides FAQ Q: What tank sizes is LANDEN BIOSMO 700DC suitable for

A: Suitable for 15–37 gallon tanks; works with freshwater or saltwater setups; compatible with LANDEN models

Q: How do I adjust flow and maintain the pump

A: Use the external controller for 3 modes and 10 flow options; maintenance is tool-—remove the cap to access the impeller