How close can i bring these lights for flowering?

[Moflow]

Here's the par maps.
Not everyone has, can afford an Apogee par meter so the next best thing is to look for the light fixtures par map.




I use around 900 umols/m2/s for flowering.
200- 400 umols/m2/s for vegging
That suits my set up.

 

[MY OWN DANK]

Here's the par maps.
Not everyone has, can afford an Apogee par meter so the next best thing is to look for the light fixtures par map.

View attachment 4814059
View attachment 4814060

I use around 900 umols/m2/s for flowering.
200- 400 umols/m2/s for vegging
That suits my set up.

Thanks man...very helpful
Looks like around 16-18inches should be good

The meter would come in handy

 

[Moflow]

Here's a thread were a fella has developed an app you can download to take light readings via yer phone or tablet.
Not sure how accurate it is but I'm sure it'll give a ballpark figure.
I haven't tried it against an actual par meter tho.

Lux to PPFD Converter App | PPFD Meter

Hey guys! I am a Java developer and I have started growing for a year now and 3 months ago I have bought a Bava 240W grow light on AliBaba. Since then it become a bit a hassle to adjust the lights and I decided to develop an Android App to make things easier for my self. I also published the...

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