5×5 ft (150×150 cm) Grow Tent Light Guide — 450–800W LED & PPFD
Lambertian simulation with effective Mylar wall reflectance (50%) across a 150×150 cm (2.25 m²) floor. No guesswork tables and no brand bias.
- Fruiting LED: 450–800 W (~580 µmol/m²/s · 16 h)
- Herbs & Greens LED: 260–330 W (~300 µmol/m²/s · 14 h)
- Floor area: 2.25 m² (150×150×200 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 |
|---|---|---|---|---|---|---|---|
| Modular LED Bar 500W (1570 µmol/s) | Spread bars | 500 W | ~580 µmol/m²/s | ~130–1300 µmol/m²/s | 22% | ≥ 20 cm | ~60 € |
| Commercial Quantum Board 450W (1420 µmol/s) | Compact panel | 450 W | ~520 µmol/m²/s | ~120–1200 µmol/m²/s | 23% | ≥ 20 cm | ~54 € |
| XL Quantum Board 650W (1786 µmol/s) | Compact panel | 650 W | ~680 µmol/m²/s | ~140–2000 µmol/m²/s | 20% | ≥ 30 cm | ~78 € |
| Modular LED Bar 730W (2292 µmol/s) | Spread bars | 730 W | ~800 µmol/m²/s | ~240–1300 µmol/m²/s | 30% | ≥ 20 cm | ~88 € |
| Greenhouse LED Bar 800W (2283 µmol/s) | Spread bars | 800 W | ~790 µmol/m²/s | ~240–1300 µmol/m²/s | 31% | ≥ 20 cm | ~96 € |
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.