How far from plants to place lights?

How far from plants to place lights?#443883

By andynorth -  Fri Dec 08, 2023 7:04 pm
Location:  Federal Way, WA
Posts:  1406
Joined:  Fri May 12, 2023 9:08 pm

- Fri Dec 08, 2023 7:04 pm #443883

I bought these
https://www.amazon.com/gp/product/B093R ... =UTF8&th=1 and I want to put them on 3 of my 4 shelves. Roughly how far should the light be from my germinating containers and also from the plants once they have germinated? I want to be sure not to burn them once they have come up. I have 2 grow tents and one will be solely for germinating and the other for the plants once they start growing.

Thank you:
andynorth-s-grow-want-list-t58612.html

Andy North

Re: How far from plants to place lights?#443884

By Panman -  Fri Dec 08, 2023 7:44 pm
Location:  Atlanta, GA USA Zone 8a/8b
Posts:  6398
Joined:  Wed Mar 04, 2020 8:41 pm

- Fri Dec 08, 2023 7:44 pm #443884

They way I determined the distance was to get the Photone app on my phone. I don't know how accurate it is to tell me about the light but I use it to compare light levels. I measured the level of light for seedlings that I knew was working, and then adjusted the distance of my new set up to match.

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Re: How far from plants to place lights?#443902

By Intheswamp -  Sat Dec 09, 2023 2:27 am
Location:  N31°43'59" USDA 8a/b
Posts:  3444
Joined:  Wed May 04, 2022 2:28 pm

- Sat Dec 09, 2023 2:27 am #443902

I use Photone, too. I use it to get in the ballpark of the recommended DLIs for my plants. Make a diffuser and hang it on a nail close by.

Re: How far from plants to place lights?#443903

By optique -  Sat Dec 09, 2023 2:34 am
Location:  Greenville SC
Posts:  1925
Joined:  Fri May 24, 2019 11:15 pm

- Sat Dec 09, 2023 2:34 am #443903

I placed my plants 92,955,807 miles from my light.

thepitchergrower, MikeB liked this

Re: How far from plants to place lights?#443908

By DragonsEye -  Sat Dec 09, 2023 2:19 pm
Posts:  1338
Joined:  Sat Oct 01, 2016 1:22 pm

- Sat Dec 09, 2023 2:19 pm #443908

optique wrote: ↑Sat Dec 09, 2023 2:34 am I placed my plants 92,955,807 miles from my light.

Blessed are the "cracked" ... for it is they who let in the light.

Re: How far from plants to place lights?#443910

By Intheswamp -  Sat Dec 09, 2023 3:14 pm
Location:  N31°43'59" USDA 8a/b
Posts:  3444
Joined:  Wed May 04, 2022 2:28 pm

- Sat Dec 09, 2023 3:14 pm #443910

optique wrote: ↑Sat Dec 09, 2023 2:34 am I placed my plants 92,955,807 miles from my light.

Well now, that distance changes throughout the year...are you making adjustments for that or do you have your light set on "Auto"?

Re: How far from plants to place lights?#443911

By optique -  Sat Dec 09, 2023 4:27 pm
Location:  Greenville SC
Posts:  1925
Joined:  Fri May 24, 2019 11:15 pm

- Sat Dec 09, 2023 4:27 pm #443911

Intheswamp wrote:Well now, that distance changes throughout the year.

I said i placed it, not kept it moving.

Re: How far from plants to place lights?#443912

By Intheswamp -  Sat Dec 09, 2023 4:42 pm
Location:  N31°43'59" USDA 8a/b
Posts:  3444
Joined:  Wed May 04, 2022 2:28 pm

- Sat Dec 09, 2023 4:42 pm #443912

...so variable lighting.

Re: How far from plants to place lights?#443913

By andynorth -  Sat Dec 09, 2023 6:49 pm
Location:  Federal Way, WA
Posts:  1406
Joined:  Fri May 12, 2023 9:08 pm

- Sat Dec 09, 2023 6:49 pm #443913

Thanks for the input. I think I have them just about right. One of my concerns was the heat as I do not want to burn anything up. I have Wi-fi Hygrometer's and am keeping an eye on that. So far it is averaging between 84 and 86 degrees. Putting a fan in certainly helped. And the humidity is around 87% since I have a humidifier in with them. I will monitor everything and see how long germination takes.

Intheswamp liked this

Thank you:
andynorth-s-grow-want-list-t58612.html

Andy North

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