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FAQs: Difference between revisions
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→What distance should my light be above my plant?: link
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=== What distance should my light be above my plant? ===
The distance from the light to the plant canopy is a large factor in determining the intensity of light (umol/s) falling on the plant. This means it can be used to approximate the actual amount of light a plant is receiving but only if we know the other factors such as the light's power consumption (in Watts) and its efficiency (umol/J). While this approximation is possible it is more accurate to simply measure the light at the canopy using a smartphone or lux meter. The light intensity of the relevant frequency for photosynthesis is called [[Light|PPFD]] and its unit is umol/s (Micromols per second). Measuring light intensity makes it much easier to
This question is very common because light manufacturers often suggest distances to use.
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