Is three of these sufficient for 2 plants?

All depends on the phone, the new phones are coming out with better sensors. Does the new phone still need a diffuser @Hellraiser?
Keep. Me updated and me and Bobby can update the DLI thread as needed. I already need to update the fact the sunlight version may not be free anymore to some users.

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Yes it needs a diffuser, using 22# paper (what they recommend) it is pretty close to the Apogee on the full spec LED setting. I will do another test soon and also try the sunlight setting to see which is more accurate.

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So does the diffuser just spread the light out ? Is it supposed to lower my number ? I haven’t been using one so I’m wondering what kind of difference it will make. When I check it had 60 at top and around 34 at bottom but not the very bottom.

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Yes, that’s the definition of a diffuser.

Only iPhones require one, not Androids.

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Oh sweet. I’m on android. Sorry I am super new to this. Was making sure if was actually using the definition of diffuse.

It’s all explained here, please give it a like if your learning.

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Oh i got the whole PPF , PPFD and DLI thing I just didnt know to use a diffuser for an iPhone. I’m android anyway.