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OK.. looking at this pic again, I may have jumped the gun... Now that I see Eraserhead's labeling of the diodes, then it's not "so" bad.. all reds on 1 string, and all blues/whites/violets on the other string. I say not so bad.. as that's still a difference in voltages, but all reds will be...

That's all that's needed.. reroute the damn traces to keep 3.xV and 2.xV separated. If need be, they can even use jumpers, or a double sided pcb.. ie: traces on both sides of the pcb, so there's no shorting by intersecting traces. Pretty damn easy.. but cheaper if you don't.

That's just panels made with ChinaCrap. There's some pretty decent grows out there with DIY Cree and Osram panels. Quality trumps price any day. Just look at the guy at ledgrow.eu.. his setup 2 or 3 grows ago was better. He had top "and" side lighting, but now he's trying to sell them.. so...

Here's some of my Cree Whites.. just to compare... CoolWhites are the R5's, and WarmWhites are the Q4's.. best cutter had on hand when I ordered. CoolWhites: WarmWhites: Clear dome.

I already stated everything starts out as blue. And the stuff added is under the dome, not a "coating". As for added supplementary wavelengths needed with the whites.. we need: 450nm, 470nm, 630nm, 660nm, and 735nm. The whites cover that quite well. Look at the Hortilux graph and compare...

You might want to check out Epistar's webpage.. they're absolute crap. 11,000mcd - 11 lumen. They don't make "3w diodes" as the panel makers claim.. not if they max out at 500mA. http://www.epistar.com.tw/_english/01_product/01_overview.php

http://www.theledstore.com.au/product_p/ls0024.htm That's a 400nm from LedEngin. They don't change colour. That's your UV ranges. Also... buddy only had the panel running for 20 or so hours.. if it changed colour that fast.. then it's crap materials. I personally see a coloured lens...

Just figured it out... ALL diodes start out as blue.. ALL of them. What does blue + red equal? Purple/violet. http://en.wikipedia.org/wiki/Purple That's a half-assed way to get violet... and waaaaay cheaper I might add. UV's are usually $10 and up.. some are $30.

It just baffles me how they get violet with a red lens.

The veg panel? 8 x Q5 Warm whites @ 107-114lm/350mA (856-912lm) 8 x R5 Cool whites @ 139-148lm/350mA (1112-1184lm) --------------------------------------------------------------- --------------------------------------------- 1968-2096lm @ 17.92W (8*(3.2v*350mA)=1.12W) If driving at 700mA, it's...

@ blacktourmaline I'm still using 735nm.. it's in the warm whites, and some in the blue whites still, though a lot less. And I don't entirely agree with earlier research about helping it sleep. Some did flashes of 735nm during daek period, and this is where that came about. From everything else...

I circled the red and the amber.. the amber looks just like the 410nm alibaba sells http://www.aliexpress.com/fm-store/800238/211243772-497521275/1W-Purple-Violet-high-Power-LED-400-410nm-6-8lm-3-0-3-6v-350mA.html But one thing I notice right away.. these guys are mixing wavelengths on the...

410?? 410's Violet.. am I going colourblind?? :D

That's a lazy man's price... :D Make your own drivers.. $25 less. Mount and solder the stars manually.. ie: no solderless holders.. another $40 less. Right there, that's a minimum of $65 less.. maybe more. Make your own heatsink.. U-Channel from HomeDepot or similar.. about $30. That's roughly...

What the hell's with the red lenses?? Holy shit!! They're using coloured lenses for the far reds. :p Absolute garbage.

Here's an easy DIY panel using top bin CoolWhites and WarmWhites available right now at cutterelectonics.. with premade drivers... Cree XP-G 10 CoolWhites top bin available right now 10 WarmWhites top bin available right now $152 USD...

I tried googling CMH.. but came up with "Cambridge Memorial Hospital"... :D

CMH? Compact Metal Halide? 250W? If that's what it is.. I had a 250w HPS in a cab in the late 90's.. kicked ass in a 36" x 18" x 3' tall grow area. From top of pots to bottom of air-cooled hood.. a little over 24". Had to make the hood myself.. couldn't find one that would fit that space :p...

The Cree whites actually have more 630nm and 660nm than the Hortilux HPS. :) Here's "my" view on using just whites... a Cree CoolWhite gives more lumen per watt than an HPS, or at least equal to. A "top bin" CoolWhite gives at least 156 lumen per watt. And that's an older pdf. That "200...

So... buddy received his 150x3W panel from E.shine the other day.. guess what? 20 hours later.. 2 rows of diodes are now dead. He's saying it's the driver, as there's been lots of driver issues with these things already, but I think it's a single dead diode.. causing the rest of the string not...