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I think you will be pleased with the results. I could find no information on an HLG QBX board I assume they are using the LM561B Plus for the 90 CRI. This is why I thnk you will be pleased. While the LM561B CRI 90 is only 25 lm, 130 lm/W, where the LM561C is 37 lm, 170 lm/W, it should do a...

Not even. You need to see through all their deception. Fraudulent liars. It's an over priced piece of shit. It's vendors like this that prop up the HPS market. When someone using HPS tries LED and believes the bullshit. Like this 200 wall watt fixture is the equivalent to an 1000W HPS...

HLG has good products that beat nearly every eBay and Amazon charlatan. HLG is honest where the others are huge liars. It's easy to lie becasue almost no one knows if they are or not. It is not easy for HLG to compete with Samsung. Samsung gets a better price on the LEDs. Samsung has an...

:blsmoke:

I'm not sure that is true. IMHO it is difficult to get good uniformity with CoBs. Where it is simple with strips. No, system efficiency is not a good use for a PAR map. They are a good way to gauge uniformity at various heights to find the optimal height. Then you just need to adjust the...

I looked at this as BX doesn't mark up the single quantity, giving a better deal on single units than Samsung. Has anyone said you think too much?8-) That was a thorough analysis. Too much like work. I was being conservative and trying to keep it simple. I'm not sure if it's fair to use...

That was an excellent explanation. I totally agree. I've got to go back over my figures. Looks like I was wrong. $14 / 4780 lm = 0.0023 @ 700 mA x 39v = 27.3w = 175/W $26.50 / 8800 lm = 0.0030 @ 1120 mA @ 46v = 51.52w = 170 lm/W My head hurts working all these numbers. It's a close call...

1000W is more than what you need. You do not need to use all those watts all the time. Cree showed they can generate the equivalent of a 1000W HPS with a 550 watt fixture. In their comparison the HPS was at 39" and the Cree fixture was at 59". PPFD in rounded numbers are about 400 in the...

Where is it located with respect to the other plants and the grow light? Pic?

Just noticed they are sold out. Sometimes I see them on eBay and Amazon. Many times marked up. That sex pistols image in my head was not good. I went through some very rough years recently. I am finally back to near normal. Although I was never normal. I could not imagine how awful it...

I bought six of them, fired them up, and measured current and temperature. They were in free air. Not attached to anything other than the screws at each end on the chassis. They were wired 2S 3P so the currents in the 3 parallel sets were a bit unbalanced. 1523 mA, 1445 mA, and 1231 mA the...

Very good up front cost. Very low cost per lumen. The down side is they are probably not too efficient. The up side is they are doing the job just fine. It would be interesting to measure the wall watts and calculate the total electrical cost per lumen.

Draw Watt: 136 Watts HPS/HID Watt Equivalent: 300 Watts Creative math. You cannot create 300 watts from 136 watts without defying the laws of physics. What they do is use the 5 watt LEDs add up the number of LEDs and multiply by 5. There is no way they are powering those LEDs at their max. Can...

Boy you must be an old fuck.:blsmoke: I grew my first 5 plants in 1974 too. Four 4' Grow Lux. Miracle Grow foliar spray. Kick as shit for back then. I paid $125 a pound of Mexican with lots of stems and seeds. $250 for a quarter pound of Red or Blonde Lebanese hash.

You cannot beat the cost of a Bridgelux Gen 2 even if you manufacture your own. All I want is a 22" strip with 21 deep red LEDs to compliment the Gen 2 boards. I have some Gerber files for the 12" strips at the bottom of this post. Free, I am not a commercial entity. I do not sell...

The Bridgelux Gen 2 seem to edge out the F-Series in lm/W and beat them hands down in cost. Samsung SI-B8UZ91B20WW typical lumens per watt = 171 lm/W $26.51 (single row) BXEB-L1120Z-35E4000-C-B3 typical lumens per watt = 175 lm/W $14.06

Public Labs has one for $10. https://publiclab.org/wiki/foldable-spec

I do not care about Licor. I no longer care to converse with your dumb ass. You are a liar and a fraud. Go away. I've wasted too much time with your bullshit. I can spend my time productively without you involved. My mistake was trying to explain thing in scientific terms. No one...

I do not recommend the double row strips. For a few dollars more you can get two single row strips. The benefit is you spread out the light for improved uniformity and more importantly you spread out the heat generated by the LEDs. Heat reduces the efficiency. The prices on the drivers are...