Astir Grow Led Panel Project...

Ganja 2 and SDS what do you think would be better plant-wise (from seed to harvest) in Astir panels - Cold Whites (let's say 6500K - 8000K) or Neutral Whites (4200K - 3800K) with WW (2700K) and 630nm?
Because I don't know do I have to order CW or NW would do the job without CW.. :confused:

Thanks for any info! :)
 

stardustsailor

Well-Known Member
Ganja 2 and SDS what do you think would be better plant-wise (from seed to harvest) in Astir panels - Cold Whites (let's say 6500K - 8000K) or Neutral Whites (4200K - 3800K) with WW (2700K) and 630nm?
Because I don't know do I have to order CW or NW would do the job without CW.. :confused:

Thanks for any info! :)
NW + WW ..
As for the reds ..
Try to find " good " 620-640 or 640-660 nm (or both ...)...
 

iknowad

Member
photo(1).jpgphoto(2).jpgphoto(3).jpgphoto(4).jpgphoto(5).jpgphoto.jpg

The Astir grow project has inspired me to make a 300w LED light. Uses WW,CW, and red 620nm. Plant is a dinafem White widow 3 weeks in veg. Flowering next week. Tent is 75% filled. Used coco/perlite mix a product similar to peters 20-20-20. Going to finish her off with organic banana tea to give her sweet notes of organics.
 

psynobi

Member
Nirvana Bubblelicious Autoflower plants. the bigger is at week 7 and the smaller at week 4. they are in a closet 60cm x 70cm x1, 30m under 2 Astir panels 48 watt total.








special thanks to a friend and test grower for Astir, from Central Macedonia, Hellas.
 

tolakra

Member
This 2x8 room will be the veg room, or will you use the same space for flowering also?

In the second case,
16 panels will be a very good number.
Then you could have 4 veg 4 all-around and 8 flowering panels and start using the veg panels and later on the other ones.
Especially if you can have the plants when they are small close to each other.
So at the end you would be using the 16 panels and have the best results for this space(400w)

In the first case you could have 8-16 panels depending on what you want.

That's the benefit with this panel. You can use it according to your exact needs and growing style
 

hyroot

Well-Known Member
^^^^ the 2x8 is veg only. I have a seperate area for flower. Thats a 6x6 area. I do soil and veg for 3 months.


8 32 oz. cups, 8 2 gal fabric pots, 8 7 gal fabric pots. Lst and mainline.

The 7 gals take up 2x4, the rest take up 2x4
 

tolakra

Member
In such a case i would use 5-6 panels for the small ones and 6-8 panels for the larger ones, depending on my budget.
Of course you can rearrange them in your room according to each plants growth rate
 

iknowad

Member
20130406_224934.jpg20130406_224950.jpg20130406_224958.jpg20130406_225022.jpg20130406_225154.jpg
Here's an update on my astir inspired DIY 300w LED grow light. White widows in week 3 of flower. I have scrogged, LST, HST, topped, fimmed, lolipopped my 2 girls. I have counted about 54 bud sites on the top canopy and Since its its tall enough near my exhaust I am able to have the lights 6 inches away for max lumen absorption. My philosophy is that I fill in every space full of lights to maximize the potential yield. My light is exactly the same length and width of my closet and LEDs are filled entirely. I have about 10 sq feet to work with as its a 5X2X5. Nutes Im using right are 20-20-20 for veg (product with exact nitrogen formulation as jacks pro), and 50/50 10-52-10 with potassium nitrate (kno3) to get a 1:2:2 ratio for flowering nutes. As this is my first grow I don't know what I am going to yield. I feed 3/4gal every day in 5 gallon coco fabric pots at 700ppm right now.
 

speedyganga

Well-Known Member
Hello everyone,
I am planing to make my own astir panel, and make a side by side comparison with 6 different spectrum.
I ask some questions to Ganga 2 and he answer me I should look at this thread.
I already red some parts of it, but it's even longer for me because english is not my mother toungue, I am not able to read everything and I apologize.

I was wondering where do you buy your leds when building yourself such panels? I looked at satsiled, but highest efficiency is for bridgelux and is 120lum/W.
When SDS is talking here of 140lumen/W so I would like to find your leds...
Why don't you use lenses? I am planing to put a single One bud under each pannel. making 8 of them I would like to harvest 100g which seems easy when looking at your grows. I thought lenses in 45° would be good. Why don't you bother with it? Apache use them with success.

I am planing to make different spectrums and see which one works the best for me,
Have you got one in mind using pink leds?
I thought of 7 WW: 1 pink : 2 red 630 but I cannot really visualize it. what do you guys think ?

bye, good grow


 

ganja 2

Active Member
7 WW: 1 pink : 2 red 630
this would be a good choice. But the Chinese do not believe even pink. and they want too much, and many need to build it as we want
 

speedyganga

Well-Known Member
hi!

thanks for answering ganga 2.
I found on ebay that satisled sell some pink led, not expensive at all, the quantity can be as small as 5 led of 1W.

I am going with a SOG under 160W of led, 8 panels of 20W each:

a heatsink of 22x15x3,5cm which can dissipate between 20-26W aproximately with optimal temp.
a simple chinese driver for 20x 1W led
a MPCB aluminium for 20leds
some glue and thermal paste
and chinese 1Wleds in different ratio in order to make my own test.

here are the ratios:
7WW : 2 pink : 1 red 630
1 blue 450 : 2 WW : 4 red 630 : 3 hyper red 660 (kind of vipar spectrum)
2NW : 18WW : 4 red (astir ratio)
2CW: 1WW: 1 red 630: 1 Hyper red 660 (apache/ area inspired spectrum)

the aim will be to find the best spectrum in each phase of the plants and ideally find a suitable one for the stretch and one for the flowering.
Then will also come a test for veg phase, but right now, I have great neon tube light.

the only things I am hesitating is where to buy my led
pink, red, blue will be epistar from satisled.
the white I don't really know... I find this led which are great according to the datasheet, but I don't believe a 1W of WW led can deliver 170-200lumen. what do you guys think?

finally I will also test the lenses in 25°, It would enable me to adjust less often the panel and to keep a very good "penetration".

bye.
 

Bumping Spheda

Well-Known Member
I'm in contact with a company who's making high CRI, Warm White, Violet pump LED's. They are currently working on a 1W package due to customer demand. I would very much like to make an Astir inspired panel mostly with these Warm White's. Here's the SPD's of their 3000K and 5200K:
ww-5630.jpgnw-5630.jpg

Not even sure what else to add, really, there's not a huge need for 660nm's. Blue peak is ~405nm. Yeah, that seems like a lot of near-UV to me, too, but hopefully they can reduce the 405nm peak for the 1W package, or I could maybe just mix in high CRI Blue pump Warm Whites in a 1:1 ratio with their 3000K to keep the near-UV levels down, yet still maintain that very broad Blue band coverage. Not sure if the Neutral White has an application apart from using them in very low numbers, perhaps in combination with Blue pump Neutral White's, and some Red/Deep Red.
 

Bumping Spheda

Well-Known Member
There seems to be some interest in these Violet pump Warm White's. Too good to be true? Let's find out together.

The company is Yuji:
http://www.yujiintl.com/high-cri-led-lighting

I've been in contact for about two weeks with one of their reps, Alex Nakao. Here's a few things that we've talked about, half of which was relayed to their production department.

For our 5630 0.4W SMDs, our test reports show our input as 406 mW and output as 95 mW. This gives us about 23.4 % efficiency.
Really not bad, imo, considering the SPD. There's so much Deep Red which produces a fair amount of heat at the phosphor level. If we want better efficiency I think it's down to Neutral White's and Red/Deep Red's.

We did a test for the violet chip alone. Attached is the test report – we’re showing about 155 mW out for 421 mW in. That’s about 37% efficiency, vs the 23% with the phosphor conversion.
We ran some tests on using the new type of chip for the 1W but we found that the luminous efficacy is lower than we expected. Our R&D folks think that it’s related to the fact that a larger die means less surface area for the phosphor conversion. [...] We are still using the same phosphor types. The proportions will most likely have to be adjusted slightly. For new housing types this can be tricky but chromaticity positioning is relatively straightforward to predict and after a few adjustments we’re usually set on the correct phosphor blend proportions. [...] Currently, our second solution involves using two 0.4W chips and mounting them in a 1W housing. By design, this will draw 0.8 W instead of 1.0 W. We’ll see how the numbers look for this approach.

Also, starting today our factory is closed until next Tuesday for Chinese National Day holiday (Chinese independence day if you will). We’ll continue experiments next week. Sorry about the delay!
I asked them if they could place three .4W chips into a 1W housing.
I’ll ask about placing three die in one housing next week when our R&D guys are back!
So that's where we're at right now. They are still on holiday, they are still having ?phosphor overload? issues with the 1W chip, and it looks like a ~1W solution will be possible one way or another.

No idea on cost. They were working on a 1W Warm White before I even walked in the door, so this technically isn't "custom," I'm just inquiring about and waiting to buy a product of theirs that hasn't been released yet. For this reason, I'm hoping the prices will be reasonable and I'll be able to buy ~50-100 units without much guilt. *crosses fingers*
 

speedyganga

Well-Known Member
Thanks you Bumping Spheda for the great link,
I am higly thinking of taking some of there 3000K. I think it has everything needed.

I would probably go for a 8 x 3000K from Yuji : 1 pink: 1 hyper red.
Or maybe a 2x 3000K from yuji : 1 normal WW: 1 red 660

the problem is the efficiency, 23% doesn't make a lot even with plenty of far red...
 
Top