FAQs: Difference between revisions
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Frequently asked questions about growing |
Frequently asked questions about growing |
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| + | 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 PPFD and its unit is umol/s (Micromols per second). Measuring light intensity makes it much easier to dial in light conditions even in cases where the grow light's efficiency or consumption is unknown. |
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| + | This question is very common because light manufacturers often suggest distances to use. |
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| + | == References == |
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| − | A: |
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| + | <references /> |
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Revision as of 17:55, 16 May 2022
Frequently asked questions about growing
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 PPFD and its unit is umol/s (Micromols per second). Measuring light intensity makes it much easier to dial in light conditions even in cases where the grow light's efficiency or consumption is unknown.
This question is very common because light manufacturers often suggest distances to use.