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But not wrong about 660 epileds orrr? sry i read most of the text but I just came home from work and feel a bit brainexhausted :-) Because MrFlux is usally 99% right about the things he says, too. I think :) And whats with this new Area51 coolwhite + red?

I mean I could put those 660 on a really nice cool heatsink no prob or I drive them lower then 650mA. What I dont know are their impurities. Other than that i dont know if its thaaat bad if the 660 is narrow. Maybe I should use 660 vs 630 like 1:4. Or I trash them if you think they do more bad...

regarding the 660 i guess i will trash them and buy more Red Arrays :-) thanks a lot, not best coverage but so convenient ;-) 65$ BOM vs 85$. (custom,transport,profit,taxes ,etc included ) I think assembly could be most expensive, depending wether they use a reflow oven (i guess they do) but...

sry for editing my previous post. This is what i added: Does Astir use 3W @1W for better efficiency or directly 1W diodes? The driver is like 6€ and if the leds cost another 5€, heatsink like 20€, what does make that 24W light cost 100€? Is it the handmade part? I...

Satis only sells one type of 660nm so i guess it must be the crappy one. http://www.satisled.com/3w-high-power-red-led-star-emitter-for-plant-grow-light-660nm670nm_p433.html Does Astir use 3W @1W for better efficiency or directly 1W diodes? The driver is like 6€ and if the leds cost...

I found a grow on RIU with astirs with about 1,6g/W. So if cree and western chips are even much more efficient then those, should there not be 1,8g/W-2g/W grows all around by experienced users with A51 and Hanspanels? Havent found those, but maybe I was looking at the wrong places? I want to...

I could read this all day long....I hope there is a chapter about cheapo led- Arrays :-)

Very interesting, thank you. Man how do you know things like "unstable emit FR"? I want those sources :-D Do you have an idea on how good or bad these are?: maybe driven at much lower current e.g. 30W instead of 100W...

I guess I got the epileds. But for their 630 and 660 I only found one version, so maybe im lucky :-)

I attached the datasheet in my former post. Is there a cheap crap version and a cheap-better version of all those standard WW, CW, 630, 660?

hmm I got like 95% of my 3W diodes from satiled ebay shop -WW,CW,630,660,Blue But when buying them there was nothing about Epiled or Bridgelux or something. They gave me pretty crappy datasheets but those mention nothing.

Ah I have to cut away the yellow blob from the chip. Fak...I cut it smaller and smaller to get to the chip, then i used tweezers to hold and while that it flipped away and was gone :( . I wish I had known there was more to the led then the pattern on top of it...because I got rid of all...

Hi, thanks. I have a malfunctioning warmwhite. I dissected it and this is what it looks like. Did I do it right? I guess it looks no where near your pics, or r those only for reds?

SDS, I photographed the emitters of my 3W cheapos. Are those the "good-cheap"ones or "bad cheap" ones? Didnt find any Info about how the reds should look like. The Wwhite seems to match your photo.

[B] i think leds r good at distributing their heat to a heatsink...but there is no way around thermodynamics, if the led has an efficiency of 40% then 60% will be heat.

beautiful looking

lol where is that damn "like" button ;-) great picshow. I could imagine a Problem with using led might be the People using it. I think led attracts a lot of noobos. Just like me. Without led i would not ever even have considered growing myself... I loved the idea of DIY and leds r super...

I have read good things about the suggested light. Looking at that nice Panel i figured i must have a mistake in my calc. 12x 100 Watt Warmwhite, each with a 50W Driver will be about 260$ for 600W. Arranged in 1:1 Warmwhite vs Red-arrays in 100W Arrays will be about 320$ for 600W. 100W Array @...

With cheap China Arrays and some other cheap red diodes you will get 600W for about 330$ if you go DIY, with heatsinks and stuff i guess it would be <400$. Those cheap Arrays grew me about 0,8g/W on my first grow ever on soil with a lot of fkups. Im not so sure if its worth spending 2000$...

Ah, you meant adaption via (natural) selection. So like a breeder that uses leds and couples the best flourishing ones/ones with favorable traits. Now I get it.