2.7×2.7 ft (80×80 cm) Grow Tent Light Guide — 200–260W LED & PPFD
Lambertian simulation with effective Mylar wall reflectance (50%) across a 80×80 cm (0.64 m²) floor. No guesswork tables and no brand bias.
- Fruiting LED: 200–260 W (~590 µmol/m²/s · 16 h)
- Herbs & Greens LED: 95–150 W (~300 µmol/m²/s · 14 h)
- Floor area: 0.64 m² (80×80×160 cm)
Photometric comparison of compatible fixture classes
Simulated by the physics engine at 16 h/day and a reference tariff of 0.25 €/kWh. Estimated · ±20% margin.
| Fixture class | Form factor | Wattage | PPFD | Min–Max | Uniformity | Safe clearance | Cost/mo |
|---|---|---|---|---|---|---|---|
| Quantum Board EVO 200W (542 µmol/s) | Compact panel | 200 W | ~590 µmol/m²/s | ~280–950 µmol/m²/s | 47% | ≥ 30 cm | ~24 € |
| Quantum Board Pro 200W (553 µmol/s) | Compact panel | 200 W | ~620 µmol/m²/s | ~280–1100 µmol/m²/s | 45% | ≥ 30 cm | ~24 € |
| High Efficiency LED Bar 150W (428 µmol/s) | Spread bars | 150 W | ~480 µmol/m²/s | ~210–830 µmol/m²/s | 45% | ≥ 30 cm | ~18 € |
| Full LED Panel 260W (702 µmol/s) | Compact panel | 260 W | ~770 µmol/m²/s | ~360–1200 µmol/m²/s | 47% | ≥ 30 cm | ~31 € |
| Compact LED Bar 300W (856 µmol/s) | Spread bars | 300 W | ~890 µmol/m²/s | ~470–1300 µmol/m²/s | 53% | ≥ 20 cm | ~36 € |
Arranging mixed species in this tent
Use the natural PPFD drop-off from center to corners: place light-hungry fruiting crops (tomato, pepper, strawberry) directly under the center and herbs or shade-loving houseplants near the edges.