Adding green LED's to my DIY COB grow light, used for lights during night-time activities?

[Planet Tomato]

Hello.

I have built my own DIY COB grow light with 2 * CXM-32 COB LED's(I had a thread about it a while ago).
In any case I now find my self needing green-only lights to use during the plants dark hours, 12 hours is a long time and I don't want to be limited to the 12 hours of light hours to do things in the tent such as refilling the humidifiers I use.

But I have some issues in finding a viable solution, the only SMD LED's that I can manually solder to a circuit board(which could then be fitted to the existing grow light) outputs 35 lm of light(MLEGRN-A1-0000-000101, 535 nm, 35,2 lm, 150 mA, 3,3 V, 1,6 W, PLCC-4).
I went and checked on the bulbs I have over my desktop and they are rated as 700 lm.

I got a small tent, 2 * 2 * 4.4 foot space(the tent is taller but from the highest position of the grow light down to the floor it is 4.4 foot), do anyone here have any clue about what sort of value for the lumens that would be required to allow good eyesight for doing work within the tent, such as LST stuff?

There are other LED's that output far more than 35 lm but they are in packages not at all as easy to work with as PLCC-4, I would need a DIY SMD solder oven for those others and I simply will not be able to afford such a thing for a while.
Maybe I could solder a few of those others with hot-air soldering tools but that is unproven until I buy some and try.

Of course I don't have to mount the green-light panel to the existing grow light, maybe I make two units and put them on opposite sides of the tent pointing downwards with an angle.

Another option is a green LED head-light but I really prefer to make a stationary lighting solution.

Cheers

 

[Airwalker16]

You don't want it bright at all. They still use green light.

 

[nfhiggs]

You don't want it bright at all. They still use green light.

True, but green light has little effect on the flowering hormones.

I'd just get a 40W green incandescent light. It should be fine for working in the tent for a few minutes during dark hours.

 

[Airwalker16]

True, but green light has little effect on the flowering hormones.

I'd just get a 40W green incandescent light. It should be fine for working in the tent for a few minutes during dark hours.

Incandescent is bad news. it's white light with a filter.use an led that targets a specific wavelength

 

[nfhiggs]

targets a specific wavelength

What do you think a filter does?

 

[nachooo]

What do you think a filter does?

Sometimes the coated surface of some brands of colored incandescent bulbs has little cracks in it...or are not very well done specially where the glass join the metal. I learned about that when I used incandescent blacklights bulbs for far red production until I bought some far red leds some years ago... Anyway I would put a filter even over a monocromatic Green led...and I would be using the low light posible to do the job..

 

[Airwalker16]

What do you think a filter does?

Not the same thing as a monochromatic green led would do, thats for certain.

 

[Planet Tomato]

Thanks for your replies, I would have made the worst choice possible otherwise I think.

I will get a few of the low-output LED's and experiment to see how many I need to see good enough.

 

[nfhiggs]

Not the same thing as a monochromatic green led would do, thats for certain.

At least Nachoo brings something to the table here and makes valid points - though I think they are somewhat overstated. But just stating "not the same" is not a valid argument without showing how the result is different.

 

[SSR]

At least Nachoo brings something to the table here and makes valid points - though I think they are somewhat overstated. But just stating "not the same" is not a valid argument without showing how the result is different.

Many cheap filters are produced to give a green light but dont worry about the IR end of the spectrum, some are actually quite heavy on the IR tbf.

Old thread i know but ive been searching green light to see if there are conversations i can join about it

Folks usually arent happy when you talk about green lights lol.

Oh, I've found btw that if you use far red to put your plants to sleep and give them any amount of green in the first half hour or so will negate the far red (maybe just the frequency i used?)

 

[churchhaze]

Just wait until the lights turn on to mess with your plants. Forget about the green light.