Has anyone done any experiments with under lighting?

[ManWithWrench]

My canopy is extremely thick and I fear of defoliating this late into flower. Yet I feel it is still early enough that this may help the lower bud sites. I did a search for "under lighting" but no luck. Hopefully someone has done this and can share results. as you can see it has very much improved light penetration. the first pic is about a week ago. I just put the HLG board underneath since it was just collecting dust.

 

[Del boy]

My canopy is extremely thick and I fear of defoliating this late into flower. Yet I feel it is still early enough that this may help the lower bud sites. I did a search for "under lighting" but no luck. Hopefully someone has done this and can share results. as you can see it has very much improved light penetration. the first pic is about a week ago. I just put the HLG board underneath since it was just collecting dust.View attachment 1413847View attachment 1413848

Hello you might get heat issues as heat rises up through the plant i might be wrong prob be better from the side

 

[TheFerret]

I thought I saw someone mention recently that Dutch Passion support told them to do this to get fat lower buds. the QB might be a bit much depending on how strong and how close it is but seems logical to me.

 

[MotaZona]

I don’t like the heat being dissipated through the LEDs like that.

 

[ManWithWrench]

I don’t like the heat being dissipated through the LEDs like that.

Should I turn the plants upside down then?

 

[Hashsloth]

Don't worry about defoliating so much,I've never had a problem defoliating if the plant is too bushy.

Take some off today and see how the plant responds, it will most likely rebound quickly and you will end up needing to defoliate again. That's been my experience so far anyways.

 

[JP1]

Great experiment. Glad somebody is trying it other then me... I'd be worried about stress. The underside of the leaves don't have the waxy coating that the top of the leaves have. Maybe turn the light way down. Should be no problem plucking a couple leaves every other day if you really want to thin it out

 

[ManWithWrench]

No turning back now. I guess my tender nurturing mornings turn into a late night army barber. Them haircuts should be more effective on the firing range. We'll check their morale in a couple days.

 

[Death The Cultivator]

Your canopy wasn't really that thick, your plants not that large to be concerned with light loss. They mostly needed a bottom prune to remove those weak branches that weren't going to produce. It looks good though.

You can do side lighting, check out Growlight Australia, but lighting from below creates shadows. From the side works much better.

 

[Rasterman]

You think you're joking. https://www.thespruce.com/upside-down-tomatoes-guide-5208132 Someday I'm going to try this.