Building a Home Made LED

[xmobotx]

well; what i think is more like 'possibly enough'

w/o side by side comparisons and w/ considering different approaches it kind of opens up especially where some strains may do better w/ differing spectrum

1030 is demonstrating the effectiveness of an assortment of whites & there is a lot of consideration for w/n/c vs w/n in the thread

 

[xmobotx]

well; i also see folks considering using the CW as a blue boost {veg/minimize stretch}

doesnt seem like all WW are equal for instance

w/ one brand of LED it may be the thing to do? we talk about the cree so much sometimes one kind of assumes its cree but you know maybe not

if one really analyzed the data specific to their choice of diode and engineered something appropriate; it {their fixture} may 'break the rules' from our discussion' standpoint yet be fully derived from our discussion {or the myriad discussions it draws from}

this whole post just sounds like i m trying to be confusing ~i think it confused me

 

[rrog]

Hahaha! I follow. I'm bringing in my perspective from when I looked at spectrum previously when my Blue Hort lamp needed replacement. I polled a number of trusted growers and it became clear that the blue needs during veg and flower were both very debatable.

Blue in veg: To supposedly reduce stretch. OK, strong light source does this also, and I've grown in a SCROG under my stairs so not much stretching allowed anyway. To me this isn't a big deal / need. I use a Ushio HPS, no blue added, for veg and flower.

Blue in Flower: To supposedly increase resin, and tighten buds. As I've said, I supplement with specific UV-b MH lamp, so maybe that's helping, but my buds have never been frostier as they are now and no blue supplement.

So this is a summary of opinion, and in no way (obviously) a factual conclusion. Given this, I'm tempted to omit the CW, as I had planned to turn off the CW string during flower anyway.

 

[xmobotx]

that makes sense 1030 said something a few pages back about how intense of light is hitting the lower leaves and how the plant senses this and this dictates how much it 'reaches' for the light

it would be interesting too to consider the spectral curve of your UVb MH

 

[rrog]

I quick looked at their site but they don't appear to have that lamps spectral output. I agree, that would be cool to look at.

I think I'm gonna pass on the CW altogether. Replace with a string of NW. If I do this simple substitution, my ratio changes from NW:WW:CW 2:2:1 to 3:2:0. Hmmm... Should probably do 1:1:0

This has been very helpful dialog. Thank you.

 

[tenthirty]

Here is the solar spectrum.
This is a good starting point for spectrum selection.


Also we want to have the spectrum fall within the Plackian Locus.


Se we have a datum of intensity and hue/color to start with.
We know the above works very well, so how can we improve?

I would probably loose the CW, if it was me,
but please try it and show us what it does!

 

[rrog]

Seems a reasonable blend for my setup. 1:1 WW to NW. I'll just turn off a set of WW during veg

 

[xmobotx]

but please try it and show us what it does!

maybe have 1 in the middle or something

mine is going to be 4 ww {3000k} 4 of those "nw" crees i linked & 8 660 rebel/2 430 rebel

red heavy dedicated flower

if i wanted to expand on that i might add some CW & you can see where it probably wouldnt be too much blue

 

[rrog]

Not too much blue if the rebels are on. I wonder if there's advantage to increasing red starting in late flower. Like later autumn.

You could slice and dice this all day.

 

[tenthirty]

^^ That is true!!

 

[xmobotx]

yeah something about that makes good sense to me {more red late flower}

another nature emulator would be synth'n a sunrise/sunset pattern w/ like 3 lamps {east lamp; south lamp; and west lamp -or more}

 

[rrog]

They do this differential lighting just as you describe for reptiles. Those dudes are right into the lighting like we are.

I've ordered the book "What a Plant Knows..." I forget the rest of the title, but it's about the possible "senses" a plant has. Coot was a bid advocate of it. I wonder if there's some photo-sensitivity that could be played out. Senescence.

Fun to noodle such things.

 

[PetFlora]

Look at the blue nm ranges of both NW and WW. WW has a fair amount of blue, so...

I recommend NW/WW 1:6 with NW in the center. The WW to be arranged at 12, 2, 4, 6, 8 and 10

This is a Merkaba. It is Sacred Geometry, the key to life. Using this arrangement COULD/SHOULD amplify the whole, sort of like supercharging


View attachment 206354

 

[rrog]

Seems like an awful lot of Red. No offense, but I'm not a follower of sacred geometry, though it's attractive.

 

[hempfield]

Take a look of this picture and tell me why do you think the tallest Mazar top is turning it's head to the coldest (and more powerful LED surrounding it) :



When the lights turn on the top is pointing straight upward. Couple of hours later it turn to that shiny cool white 10W LED. The LEDs above have 45 degrees lenses, so the light is more focused and intense. The plant does not seems to be attracted by the warm white LED.

 

[rrog]

Very interesting!!!

 

[xmobotx]

that the apical meristem of the group?

i would speculate that it is more intensity ~that particular diode to that particular top is the point of most intensity

perhaps we do need some cool white?

 

[rrog]

I would think intensity is what is in play here. Given that WW and NW have plenty of blue, I would be surprised that the bluer CW were the cause. Maybe. That's some armchair thinking on my part.

 

[hempfield]

What is more interesting is than only one top has this behaviour, the talest one ( which I thought is just a tiny branch and I did not train her - and now look what she transformed id).

Very curios to see what if this happens every day (just to wait for lights to turn on).

 

[xmobotx]

if this is a common characteristic i can see where a CW in the middle of the array might seem like a good choice

unfortunately; i dont have enough science going on to do more than speculate about it

however; if it did prove to be something which could be relied upon; it could be used to 'trick' the plant {w/ multiple diodes} into 'following the sun' ~like say 6 of them on for 2 hours each starting @ the E the next one turning on as the last one turns off

lol whether that may be beneficial umm ---> ???

the talest one

confirmation!!! it is the apical meristem ~interesting