Free Tool · Science-Based · Peer-Reviewed Data

Liquid Tree Plant Calculator

Enter your room size, number of people, and activity level. Get the exact litres of spirulina culture, vessel count, LED wattage, and CO₂ offset percentage — calculated from peer-reviewed bioreactor research.

// Space

Space type

Floor area (m²)

Ceiling height (m)

Ventilation level

// Occupancy

People 2

Hours occupied / day 8h

Activity level

// Target & Setup

CO₂ target (ASHRAE/REHVA)

Algae species

LED setup quality

—litres cultureTotal volume needed

—vesselsRecommended split

—g CO₂/dayOccupant generation

—g fixed/dayAlgae fixes daily

—g O₂/dayFresh O₂ produced

—% coverageCO₂ offset achieved

// Scientific sources CO₂ fixation rates: Ramirez-Perez & Janes (2009) Habitation 12(1) — Spirulina platensis photobioreactor, 25.1 g CO₂/m³/h peak. Species comparison: PMC6962114 (Spirulina), iaees.org 2016 (Chlorella 430 mg/L/day), journal data (Scenedesmus 253 mg/L/day). Human CO₂ emissions: PMC10832055 — climate chamber study: sleeping 11 L/h, seated 19.6 L/h, light activity 46.9 L/h, exercise 115.4 L/h per person. CO₂ thresholds: ASHRAE 62.1, REHVA traffic-light system. Atmospheric baseline: 425 ppm (2025). CO₂ density: 1.964 g/L at STP.