AlgaNexus microalgae reactor tubes installed on an outdoor facade wall

Smart carbon capture for sustainable spaces.

AlgaNexus® modular reactor tubes house living microalgae that absorb CO₂ and deliver real time performance insights across built environments. Empowering cities and organisations to meet their climate goals.

The system

A modular system that adapts to every environment.

Custom configured from the same core reactor tube to deliver reliable, scalable carbon capture performance across buildings, public spaces and city infrastructure.

AlgaNexus microalgae reactor tubes installed in a building lobby
System capacity50L per standard tube
Annual CO₂ removalUp to 5,500 kg per tube
Power sourceGrid, solar-optional (carbon-negative operation)
MonitoringIoT-enabled carbon tracking
IP statusPatent protected

Independently verified. Performance figures are verified by CMA Testing Hong Kong; the system was developed in collaboration with the Nano and Advanced Materials Institute (NAMI).

Why AlgaNexus®

Why choose this system.

Every claim is backed by verified data — not just marketing.

Proven performance

  • Real capture, not offsetting — Living microalgae absorb CO₂ directly through photosynthesis, on-site, delivering genuine carbon removal rather than purchased credits.
  • Independently verified — All performance data follows approved methodologies and is validated by CMA Testing Hong Kong, ensuring transparency and credibility.
  • Continuous, auditable data — Integrated IoT monitoring provides ongoing, verifiable records for sustainability reporting — not one-time estimates.

Built to fit

  • No new land or structure required — Designed to integrate seamlessly into existing walls, lobbies, or facades.
  • A visible sustainability story — Installed where people can see and experience it, turning sustainability from a report line into a living statement.
  • Improved air quality, as a bonus — Oxygen released during operation measurably enhances indoor and outdoor air quality.
Where it's installed

Where the system shapes the future of enterprise sustainability.

A modular system built to advance sustainable ambitions and ESG objectives everywhere it's installed.

Forest in the Library, an educational public installation

Educational Institutions

Schools and universities become early adopters of climate tech leadership. By bringing real time carbon capture into learning environments, they equip future innovators with firsthand experience of the technologies that will define tomorrow's sustainable cities.

Corporate office lobby installation

Corporate Offices

Forward-thinking organisations integrate the system into their workplaces as a visible commitment to climate leadership. Each installation turns offices into intelligent, sustainability-enabled environments — reinforcing ESG strategy, elevating brand credibility, and signalling a long-term vision for responsible growth.

Outdoor public installation of AlgaNexus reactor tubes

Public Installations

Across urban spaces, the system becomes part of a city's sustainability infrastructure. Families, commuters, and communities encounter living technology that captures carbon where life happens, demonstrating how future-ready cities can embed climate action seamlessly into everyday environments.

Media & events

See innovation at work.

Watch how our modular reactor system operates across diverse installations that reflect our commitment to measurable climate impact.

About us

A pioneering innovator since 2005.

Greentins Group — Hong Kong's pioneering environmental innovator since 2005, delivering award-winning carbon capture solutions backed by Nano and Advanced Materials Institute (NAMI) and CMA Testing (Hong Kong).

Talk to us

Tell us about the space you're thinking of.

Let's explore your space.

Offices, campuses, and public buildings can all become part of a living sustainability network — where every wall contributes to a cleaner, smarter future.

Technical details available on request.
Technical depth, shared responsibly.

Verified data and case studies can be provided once we engage in a real conversation — a purposeful choice to protect proprietary insights and deliver information that truly matters.