Vapor pressure deficit (VPD) is extremely important for growing plants. This chart will help you ensure you grow is maintaining a great VPD level.
VPD helps you identify the correct range of temperature and humidity to aim for in your grow space. With VPD you can achieve the best results while avoiding pest and environmental problems. VPD also controls plant transpiration rates, stomata opening, CO2 uptake, nutrient uptake, and plant stress.
For more info on VPD, check out our VPD guide that includes an overview of the importance of VPD and free digital versions of our chart & calculator: pulsegrow.com/vpd
SHIPS SEPARATELY FROM OTHER PRODUCTS
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|---|---|---|
| Pulse One | Pulse Pro | |
| Recommended for | ||
| Recommended for | Growers who want to use only batteries. Veg Rooms, Dry Rooms. | Growers who use CO2 and/or optimize light intensity. Flower Rooms. |
| Key Features | ||
| Temp, RH, VPD, Dew Point, Basic Light Data | ||
| Temp, RH, VPD, Dew Point, Basic Light Data | ✓ | ✓ |
| CO2, Advanced Light Data (PAR, PPFD, DLI, Spectrum) | ||
| CO2, Advanced Light Data (PAR, PPFD, DLI, Spectrum) | ─ | ✓ |
| Handheld PAR Reader and Spectrometer | ||
| Handheld PAR Reader and Spectrometer | ─ | ✓ |
| Easy to Use App | ||
| Easy to Use App | ✓ | ✓ |
| Custom Alerts | ||
| Custom Alerts | ✓ | ✓ |
| Industry-leading US-based support | ||
| Industry-leading US-based support | ✓ | ✓ |
| Fast and Free US Shipping | ||
| Fast and Free US Shipping | ✓ | ✓ |
| No-hassle Returns and Warranty | ||
| No-hassle Returns and Warranty | ✓ | ✓ |
| Connectivity | ||
| Connectivity | WiFi | WiFi |
| Coverage | ||
| Coverage | 50-250 ft² (5-25 m²) |
50-250 ft² (5-25 m²) |
| Power Options | ||
| Power Options | 2x AA Batteries or AC Wall Power | AC Wall Power |