Lighting and CO2
Light-output references, added CO₂ planning, measured pH comparison and product-label dose scaling.
Related Guide
Use the light-output range as a planning reference. Tropica’s ranges come from T5 lighting experience and do not measure the light at your substrate.
CO₂ planning checks plant needs against added gas supply. Measured pH comparisons have separate assumptions and do not confirm concentration or livestock safety.
Source references: Tropica lighting, JBL gas-system manual, and Dennerle indicator instructions.
FAQ
Why doesn't this tool estimate PAR?
Volume and fixture wattage cannot establish underwater PAR. Light distribution, spectrum and tank depth matter. Use a PAR meter or appropriate fixture measurements.
Does a pH difference give a CO₂ concentration?
This tool shows only a conditional relative factor. Without a known baseline and suitable water chemistry, it cannot give an absolute concentration or confirm safety.
Can the tool calculate bubbles per second?
No. Bubble size, diffusion, circulation and gas exchange differ between systems. Follow your equipment instructions and monitor the actual aquarium.
Do all plants require added CO₂?
Plant records distinguish no added CO₂ needed, added CO₂ beneficial and added CO₂ required. Confirm your supply setup in My Tank to check compatibility.
Why enter fertilizer label values?
Different products have different concentrations and schedules. The tool scales the dose for one application from the actual label instead of assigning generic millilitres to a dosing method.
Did this answer your question?
Light-output bands are planning references. The pH comparison is conditional and does not measure absolute CO₂ or establish a safe injection rate. Results are estimates based on general guidelines. Individual species may have specific requirements.