HUSBANDRY
Photosynthetically Active Radiation (PAR)
Usable light reaching aquatic plants and corals. Drives growth in propagation and coral nursery systems alongside CO₂ and nutrients.
Threshold Bands
| Band | Range | State |
|---|---|---|
| High light | 100–150 | OK |
| Medium | 50–100 | WARN |
| Insufficient | < 20 | CRIT |
Formula
Quantum-sensor PAR at substrate in propagation zones.