Blurple distance from weed

[datfatboi]

I have a 230w blurple (real 230w)

I have a month and a half old autoflower that has started flowering 2 weeks ago.


I have a 40x40 space, i run the light at 100w, how far from the plants should it be kept?

Right now its at 11 inches from the biggest branch

 

[bruno12345]

Well, you can download a lux light meter for Android, and try to make a conversion into ppfd, for a more scientific approach.

And you can put your hand beneath the light, and see If It dont feels unconfortable for your hand to stay there for 30 secs or a minute.

If It is too much for your hands, It is too much for the plant.

Cannabis likes a Lot of light, but doesnt like much heat in the leaves..

Just my take, i use a hps, so cant give anything precise to you.

Maybe someone who uses similar lights can help you more

 

[Skunksta]

I would start at around 16" and work my way down if i see no stress.But search your light kinda different
with each manufacturer. And the plant happy growing.