IMPORTANT: This tool provides theoretical guidelines only. No guaranteed dissolved H₂ levels. Use at your own risk.

Hydrogen Protocol Calculator

Diffuser Method • Pulse Modes Only • 30-Minute Cycle Loops

A separate calculator will be available for the Closed-Loop Circulation Method (higher dissolution efficiency).

Theoretical Daily Protocol (Diffuser Method)

How This Calculator Works (Diffuser Method)

This calculator is for the Diffuser Method (gas injection via diffuser into the sump or tank). It assumes typical real-world dissolution efficiency of ~3–4% with basic diffusers. A separate calculator will be released for the Closed-Loop Circulation Method, which will use significantly higher dissolution assumptions.

Assumptions & Notes

  • Baseline: ~100 gal saltwater at 300 ml/min reaches ~0.3 ppm with roughly 120 minutes of actual gas delivery.
  • Real-world dissolution with basic diffusers is low (~3–4%). Most H₂ off-gasses. Optimized reactors or the future Circulation Method will improve this.
  • H₂ is ~15% less soluble in saltwater than freshwater.
Runtime & Ventilation: These pulse schedules support extended daily use. Active cabinet ventilation is recommended when running more than 6–8 hours per day for best performance and safety.

Important Safety Notice:
The use of molecular hydrogen in closed aquatic systems is still an emerging area of study. Copexa systems are designed as tools for those interested in exploring this technology in controlled aquarium environments.

Molecular hydrogen (H₂) is flammable. Active cross-ventilation is required at all times. Copexa systems are not intended for use in fully enclosed, unventilated spaces such as upper aquarium canopies, hoods, cabinets, stands, or sump enclosures.

All use is at your own risk. Please review our Terms of Service and Scientific, Safety & Product Disclaimer for full safety guidelines and terms.