LED yield results from the rui community, Refuge from HGL threads

[rkymtnman]

4K will definitely need some red supplementation

i really liked the results from my first grow with the 4K. i used 4K for my CMH bulb too and had great results with it.

in a nutshell, what will the added 740nm give me result/growth wise vs just 4k?

i did have a bit more stretch than usual

 

[boilingoil]

Yes, I am talking pbar true plant usable spectrum

The spd is kinda on her website but it's cutting off the 740nm which is what you all are missing

View attachment 4329104

I'm not missing 740 on my lights, only thing missing in my spectrum is anything lower than 410 nm . So what's the point I guarantee I have a fuller spectrum than her lights.

 

[boilingoil]

i really liked the results from my first grow with the 4K. i used 4K for my CMH bulb too and had great results with it.

in a nutshell, what will the added 740nm give me result/growth wise vs just 4k?

i did have a bit more stretch than usual

If you have an spd for your led's I'll give you a recipe to supplement but your going to need more than just 740.

 

[Norml56]

Not a difference that you'd ever notice.. You can go on the Samsung site and use the calculator to see the difference in efficiencies..

Except in the pocket book.

 

[lukio]

I don't use the under canopy lighting anymore, I don't feel it did much for me. I think supplemental side lighting is great for large tall plants like 4 footers.. I'm using about 3400 watts of cob over a 6x12 canopy and I should end up with about 14 pounds. I'm adding another room with the same size grow canopy using 60x lm561c panels. My cobs put out about 52k lux at the lowest measured spot/inbetween cobs, the lm561c panels put out about 60k lux at the same wattage in between the panels. The room with the lm561c panels has the capability of running about 1000 more watts total so I will see how far I can push it..

wadddup aaaahhh man, can i move in and take notes? sounds like you're smashing it still. how far are you from chop?

 

[Norml56]

i really liked the results from my first grow with the 4K. i used 4K for my CMH bulb too and had great results with it.

in a nutshell, what will the added 740nm give me result/growth wise vs just 4k?

i did have a bit more stretch than usual

I'm running a 3100k CMH with 4 288 2700k QB Boards in a 5x5 and I've been happy with the results

 

[rkymtnman]

If you have an spd for your led's I'll give you a recipe to supplement but your going to need more than just 740.

 

[rkymtnman]

they are the atreum 144.2 4K boards fyi @boilingoil

 

[boilingoil]

you need a lot of red for sure. 620 nm 660 nm 740 nm would help in flower production. Like 25-30 watts per 100 watts of that spectrum.

 

[boilingoil]

they are the atreum 144.2 4K boards fyi @boilingoil

As long as their reported spd is not far off it doesn't matter

 

[rkymtnman]

As long as their reported spd is not far off it doesn't matter

i had to look but they are the samsung lm301b SL bin.

 

[rkymtnman]

you need a lot of red for sure. 620 nm 660 nm 740 nm would help in flower production. Like 25-30 watts per 100 watts of that spectrum.

thanks!

so it's an 8 board 480w total light for my 3x4. i built it so it has a decent sized opening b/t each row of 4 boards.

so roughly 120'ish watts of reds total is what i need?

and then if i add 660 along with 740, wouldn't that also give me the Emerson effect? isn't that 2 distinct sources of less than 700 and more than 700nm?

 

[boilingoil]

thanks!

so it's an 8 board 480w total light for my 3x4. i built it so it has a decent sized opening b/t each row of 4 boards.

so roughly 120'ish watts of reds total is what i need?

and then if i add 660 along with 740, wouldn't that also give me the Emerson effect? isn't that 2 distinct sources of less than 700 and more than 700nm?

660 targets the peak wavelength for photosynthesis. If you'd move their spd chart down to make the red peak at 660 instead of 600 you could cut the 660's down.
Basically yes.
480 watts in a 3x4, I'm running 520 watts in a 4x6

 

[Johnny Lawrence]

I'm running a 3100k CMH with 4 288 2700k QB Boards in a 5x5 and I've been happy with the results

That's a dope setup for a 5 by.

 

[Frank Nitty]

I'm running a 3100k CMH with 4 288 2700k QB Boards in a 5x5 and I've been happy with the results

Pics please

 

[lukio]

I've been thinking about starting a new journal with the dosatrons running..

would love to see, dude! hope it all works out, man. what strain you growing?

 

[Warpedpassage]

you need a lot of red for sure. 620 nm 660 nm 740 nm would help in flower production. Like 25-30 watts per 100 watts of that spectrum.

Can i ask how you settled on that ratio? Have you tried going heavier with red, especially 660? Reason i ask, i plan on experimenting with different ratios. Im planning 50-60watts of reds to 100-120watts of 3500k. This is especially for particular varieties that i think might benefits from such heavy red.

Down the line , id love experiment with different ratios during the day.

 

[boilingoil]

Can i ask how you settled on that ratio? Have you tried going heavier with red, especially 660? Reason i ask, i plan on experimenting with different ratios. Im planning 50-60watts of reds to 100-120watts of 3500k. This is especially for particular varieties that i think might benefits from such heavy red.

Down the line , id love experiment with different ratios during the day.

A little science and actually growing plants under those spectrum. I pull a minimum of a pound a month from my garden just playing around.
When I'm serious about production that jumps to a kilo per month with running slightly over 1,000 watts in the flower room.
A lot of that starts with the base spectrum you use for the lighting as you adjust the spectrum to cover a wider range that targets photosynthesis peaks.
That's why I inferred to @OneHitDone lettuce grow-off that HGL's light would work good for that as it's main push of lighting is in the reds as lettuce prefers a red shifted light.

 

[rkymtnman]

so @boilingoil i was checking on things last nite and came across the emerson board from rapidled.

it seems like it would fit what i need deep and far reds but it's only 30 watts. it says it covers 2x4 (i'm 3x4) and it would fit perfectly between the qb light that i have. but that's only 1/4 of the watts you said i should shoot for.

either that or 2 of the far red pucks was my second choice to at least give me a spike at far red. same thing though, only 14 watts. and then add some 660 in a different manner after i see what just far reds would do.

thoughts? thanks!

 

[boilingoil]

You need to watch your red to far red ratio, too much far red signals shading and causes stretching .