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Questions Using Green Spectrum Led (for lights off)


Topic starter

Hey guys,

As it’s winter and I have a loft grow I’ve moved my dark period to the day time. This is also as I’ll be having some work done in my place soon and I want to avoid any issues if they decide to turn the power off for some reason during the day. 

During Veg this was fine but now I’m in flower and have the lights off from 8am-8pm so I don’t have much time to do anything during those hours like I did before.

I was looking at these Green Hornet Led lights (either the night light or head torch) thinking that I could go up into the loft turn the light on then close the door behind me so it’s only the green led light when I open the tent.

Is this ok to do on a daily basis as I’d like to water before the lights come on and also if I happen to get some free time in the day just go and maintain the scrog etc?

Has anyone got experience using these lights or are there any others that do the job better?

Or, are there any horror stories about using them as I really could do without stressing the girls?


4 Answers

I have used a green light to take care of an issue during the dark period before. I was in and out very quickly.  I would not suggest using one and entering the tent on a regular basis during lights out.

There are studies out there that suggest the plant does absorb and use green light, i dont have the time to locate the info  i have to get ready for work. but it can be easily found.

You have put alot time and effort in to grow your plants, id find a way to work in there during lights on if at all possible.    just my 2 cents worth

good luck with what ever you decide

Sativa to change the things I can, Indica to accept the things I can’t.

Thanks for that mate. Defiantly don’t want to mess with them at this stage. Maybe it would be better to change my lighting schedule then.

Would you say to change the lighting schedule by one hour increments for a couple of days to avoid a shock? So moving from 8am-8pm to 5am-5pm over 3 days? 

If you are trying to move the light cycle it would be best to lengthen the dark hours, not the light hours. If the plant gets less than 12 hours of darkness per day it could stress that plant into trying to re-veg. Some strains would be bothered so much, others will.

Just my opinion and totally your grow so this is your call brother. Woodi and I are on the same line of thought


They have to be 'actually' green close to the 530nm wavelength...most are not...check the specs first 😉


If you have to move their time schedule, I would be temped to just do it. Like a Band-Aid, just do it and get it over with. If they healthy and happy it should work, BUT I've never had to do it. IMO a little at a time or all at once, I just do it and let them adjust. Maybe won't even notice.  

I would turn them off early first, and then turn them on at the 5 am. Even if you shorten they time it may just make them move firster in flower. Shorter day and all.

Good luck man, sorry I don't have a solid answer for you. Let us know how it goes. Thumbs Up  

Topic starter

Thanks guys. I’ve set it go into lights off at 5am so they are only going to get 9hrs of light today. 

Hopefully it all works out 👍

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