I know they used to guarantee it. They even came up to me/us at the max yield to brag about it. And I called them out on it being lettuce...they walked away shortly after deflecting my statement.
As for growers house...IDK. I don't want to be starting shit...but I used 3 different PAR meters(apogee, apogee for LED's, and a brand new Li-core) and the specroradiometer all of them showing significantly less than GH is reporting. Just reporting why I saw with my own eyes. All the other brands I have been able to double check GH's readings have been correct, so I really wonder what their deal with the DS is.
Nate said to me specifically at the SF show last year that illumitex has many billions for marketing...and that is how they got to where they are. I don't want to totally say what I think...but it's spelled out here for any one to infer...I think the DS is BS.
I asked him to dial it down for me. They come dialed up standard. The readings are very close in my setup now...nowhere on the canopy below 500µmols pretty much. And my new light is the original chips...
Here is the 411 on the different/new chips. I was wrong in the past.
Original at200/600 chips are/were the
top bin 119a
The new chips that will be making their way into lamps soon are the
top bin 119b.
Old were the A's...news are the B's.
So if the B's are truly that much better than the A's...I can't wait to see what the new lights produce.
Nichia 119/219- Same chips but different solder pad layouts...the 219 is identical to cree for easy implementation. But since AT has always been nichia...so they use the original nichia pad layout on their boards, which are on the 119's. SO I apologize for saying they were the 219 in the past. Aparently they "tested them... no need to change their board design for no difference in performance.
I can't find a A spec sheet...but they are basically the same chips as the B's, just improving a little over time.
Here is the specs on the 119B...
http://www.nichia.com/specification/products/led/NVSW119B-E.pdf
Would I personally wait...Yes...is it going to be night and day...No.
I saw a neo300 grow on the farm...I think around .75g/w. I think they are solid lights for certain people...but they are not top dog imo.
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That isn't what I am going for...LED section it is...I never wanted to leave anyways.
That is the consensus...and also my opinion.
They are pricey but actually the same if not a few pennies cheaper than the other top brands $/watt.
A DIY COB system of 600-700w is going to run ~$1200-$1400. The AT600 can be gotten for $1999 with my code. And if you are buying multiple you definitely have ammo to haggle with. It is till expensive, don't get me wrong...but it is not a different category of price like people think.
DIY is the only thing I can say with some confidence will compete on this level with hps. But it too is not cheap...just less expensive...and then takes some work/building. I loved the work...but others just want to plug and play so things like no assembly or work might be worth difference to some.