Lighting Light intensity for autoflowering plants (lux)?

[slimeslidingsticks604]

I stumbled across this in my wonderings on the web -- I checked it out in sunlight with my light meter and was the same reading. DLI, light meter, and par meter for an iphone. Hope to get it checked against a par meter at some point. The cost is minimal, like the price of a latte' for the app. To use it for indoors, you will have to buy it to unlock the feature for indoors. Also, be sure to make the diffuser out of typing paper!

Photone - Grow Light Meter

The grow light meter app to measure PAR / PPFD, DLI, lux / fc, or Kelvin with your iOS or Android phone. Including PPFD meter and DLI conversion for plants.

growlightmeter.com

Ive been using it and i think its pretty decent, i found a youtube video that was made a week or so ago comparing it to the Apogee the video is titled. Par APP test and comparison

 

[Kyote]

Ive been using it and i think its pretty decent, i found a youtube video that was made a week or so ago comparing it to the Apogee the video is titled. Par APP test and comparison

The migro dude likes it and his thumbs up is good enough for me. I've been using it as well.

 

[King's Indican]

Photone app is great I have tested it in all different ways that I could and it seems very accurate as the Migro guy states the same. Also got a uni t meter and match it with the other app called ppfd meter which delivers the same results. I mean very accurate No calibration needed.
The chart shared in the first pages is also very good I think. I have grown many different strains of autoflowers some plants like 40 DLI some can't tolerate more than 25 DLI. So you need to determine what she needs which is also closely related to her health at the moment but mostly related to VPD I think or things about ventilation and air quality setup.
In another video Migro guy also says that most efficient way is to match ppfd and co2 ppms. For example if you have ambient co2 which is 450, there's no point to exceed 500 ppfd which is not really high.
Best way to determine is watch the plants just before the lights turn off if they start drooping before the lights go that means whatever ppfd you are giving is too high. Let's say you are running 18/6 grow and you saw the plants already drooping 6 hours before the lights go off so basically it means you are giving them 1/3 more than it actually needs. Adjust according to that. Now I got Afghani #1 and Blueberry Autos in 18/6 and they don't really like more than 500 umols.

 

[Kyote]

Photone app is great I have tested it in all different ways that I could and it seems very accurate as the Migro guy states the same. Also got a uni t meter and match it with the other app called ppfd meter which delivers the same results. I mean very accurate No calibration needed.
The chart shared in the first pages is also very good I think. I have grown many different strains of autoflowers some plants like 40 DLI some can't tolerate more than 25 DLI. So you need to determine what she needs which is also closely related to her health at the moment but mostly related to VPD I think or things about ventilation and air quality setup.
In another video Migro guy also says that most efficient way is to match ppfd and co2 ppms. For example if you have ambient co2 which is 450, there's no point to exceed 500 ppfd which is not really high.
Best way to determine is watch the plants just before the lights turn off if they start drooping before the lights go that means whatever ppfd you are giving is too high. Let's say you are running 18/6 grow and you saw the plants already drooping 6 hours before the lights go off so basically it means you are giving them 1/3 more than it actually needs. Adjust according to that. Now I got Afghani #1 and Blueberry Autos in 18/6 and they don't really like more than 500 umols.

Pretty much how i go about indoor grows as well when it comes to photons

 

[Srfr]

Pretty much how i go about indoor grows as well when it comes to photons

I've come to a similar conclusion. The app is good but IMO the chart is giving the MAX values for autoflowers. My SODK cant handle a DLI of 40 at day 50. I dialled it right back and I've got praying leaves again. I've still got a little yellowing of leaf tips so I'm hoping slowing photosynthesis a little will give the plant a chance to recover. We shall see!