PJ Diaz
Well-Known Member
OK, so I don't know where you are getting your stats, but I assure you that HLG QB96's can be driven much higher than 138watts. In fact they can be driven at over 200watts with a heatsink upgrade. With the standard heatsink they are rated for up to 200watts a piece, so I'm kind of feeling like you don't really know what you're talking about with such a comparison. Also not sure where you came up with the PAR measurements at 10" for QB96's, because at that distance (even at 138watts) they will cause excessive light damage on plant tops.Ok so the hlg you talking about are 138 watts a piece it would take 8 to total the wattage of a black dog. At 10 inches the average par is 700. The average par of black dog at at 30 inches is 900. At 10 inches it goes up around 3500 it doesnt have uv and I dont think it has infrared. These radiations have other profound effects on plants other then finishing them up and flower induction. They cause chemical reactions that make the plant absorb more carbondioxide and help produce more chlorophyll thought the life if the plant. Black dog uses uva light with doesnt harm plants as does uvb and UVc. And since we talking about expensive commerical lights hell any grow lights I would think there would be a spectrometer purchased to not only measure the amount and intensity of the light being used but also the type of light being used. Apogee makes one the would tell you if your uv diodes were bad in with case blackdog has a lifetime warranty so if your diodes failed they would replace them. Name me one commerical grow facility used diy equipment to grow weed over branded reputable equipment. Fact of the matter is black is expensive but it is worth it when it come to return on investment
As far as UV, no one is using UVC to grow, so not sure why you mentioned that. Also there are several scientific studies which point to burst type of lighting with UVB to be quite effective in increasing cannabinoids. That's why when I run UV, i only run it for 15 minutes at a time, followed by a recovery period of at least 45 minutes before another burst. As far as UVA, there is generally plenty of that in 4k white diodes, which is what the QB96's use, in addition to 630nm and 660nm diodes.
Also if you bothered to read my post you would see that I addressed that far red is better run separate, so that you can use it past the main lights out for flowering initiation.
Even if there is a lifetime warranty, it's useless because the light will be obsolete in 5 years. It really isn't a good return on investment at all. Do the math.
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