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Can someone give (or point me to) a rough guide of the correlation between generalized sunlight requirements (i.e. partial sun, indirect sunlight, full sun, etc...) and their approximate corresponding PPFD (Photosynthetic Photon Flux Density) values?

I ask because it is difficult for me to parse these generalized values given that I am in a semi-tropical environment, US Hardiness Zone 9b.

Specifically, Peace Lily care requirements state that they do well in low light, but 'low' is a highly relative term, and a more precise suggested (even approximate) PPFD value would be much more helpful. I am trying to determine whether I should get a brighter L.E.D. for the Peace Lily I am growing inside.

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  • Is this question possibly more appropriate for the biology exchange or some other exchange? If so, leave a comment, and I will delete the question here and repost in a different exchange.
    – Free Url
    Commented Jan 29, 2018 at 15:25

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Peace Lily Spathiphyllum based on Purdue University's Extension can be grown between 2 to 10 Daily Light Integrals for that day. Taking that into account you can briefly determine what PPFD the Peace Lily can get. Try this calculator. If you can get the specs for your LED you could try your hand with this calculator to determine correct height and light output to generate the corresponding DLI and PPFD.

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