It cost me like $340 for a new in box 200w timber 3590 kit from eBay and whatever the quantum board cost me and like $20 in parts to put it all together. I have 2 more Vero 29s coming for the open spots next to the quantum board Which was like $140.
Your logic is little bit way too optimistic...
It is voluntary to point out the stupidity of the umol war! Everytime a new light/chips is launched pple think they can have better results... but in fact they have not! Actually we replace 1000W HPS by around 700W of COB and it's a very good thing.. but if one day someone prove me that I can replace 1000W HPS by 500W for me it will be a real evolution.. for the moment I don't see a real and useful evolution with the QB... IMO it looks like more a commercial thing than a usefull thing.. but it's just my opinion.. maybe I'm wrong because I have not tested it.Your logic is little bit way too optimistic...
dope light!
Well I mean theoretically speaking efficiency is limited strictly by physics. so as long as you're losing energy in the form of heat in the conversion between electricity and light you are not at the maximum theoretical efficiency technology could - potentially one day provide. For example, what if we develop a perfect room temperature superconductor?Your logic is little bit way too optimistic...
Just cool those diodes down to about 10 degrees kelvin... Should be doable, right?
Look man, Airgas is already enough of a pain in the ass, I am totally not stocking liquid helium at the grow shop for you.
Just think - a neodymium magnet in the bottoms of your pots and you could mag-lev the lights! No hangers needed!Look man, Airgas is already enough of a pain in the ass, I am totally not stocking liquid helium at the grow shop for you.
He says sarcastically - pressing magic buttons on the lightning box that shares his thoughts with the world.
its been there for a while
not necessarily. more like there is a major dichotomy between manufacturers who understand and promote efficiency and those who understand that promising the moon regardless of the reality of your claims sells a shitload of lights (for awhile)
really not any different than understanding the nuances of HID. it was not that long ago that you couldnt even mention what you were growing and the shops would offer zero tech support, it was on you to know the light intensity, temperature, cooling, etc. your crop required. It wasnt long before that the internet didnt exist and you had to bribe your non-growing buddy with weed to ship an Ed Rosenthal/Mel Frank/Jorge book to his house instead of your house with the garden.
i have yet to see a competent experienced grower disappointed with the current tech. welcome aboard!
Honestly, as someone who works in a bigass hydro store. I can say, these reps like the bloomboss guy will come in, they don't know their product for shit, and they're hocking something, vastly overpriced, and massively outdated. Like, if you work, in that industry, you should know your product and competing products, I know most sales reps just want their money, I kicked major ass at phone sales and I knew exactly how each company sucked, including whichever one I was employed at in the moment. You have to know, your product. For me to see, someone charging 600+ dollars for a blurple 3 watt lensed diode panel that went out of fashion, several advances in technology ago, is like seeing a Pentium 4 on sale today for a thousand dollars.
I just printed this and framed it and hung it on the wall
Check olut GrowGreen 200w board covers a 2x2 real easy and a single HLG-185H-C1050B driver. check out my thread on the two channel board or DM mew for more info with web site link
I thought the new QB's and other Samsung diode boards could be used at 30 watts per/sq ?
And If the potency is the same without ir or uv.
20 ran at 50 watts will provide significantly better penetration than 13 at 75 watts. Individual intensity of the light sources is not what makes for penetration. Penetration is based SOLEY off of how diffused the light is (more cobs + spread out = more diffused) and how low wattage each light source is, because the plant can grow much closer to them without burning.
To be fair tho the plants under the cobs do look alot bigger hence the lesser lower light..20 ran at 50 watts will provide significantly better penetration than 13 at 75 watts. Individual intensity of the light sources is not what makes for penetration. Penetration is based SOLEY off of how diffused the light is (more cobs + spread out = more diffused) and how low wattage each light source is, because the plant can grow much closer to them without burning.
COBs have shitty penetration compared to QBs. And it makes it much easier for them to bleach since the canopy gets all the photons and underneath is shaded out. And it also means lower on average yields because a plant getting equal light all over can photosynthesize much more efficiently than one getting blasted on the tops and get nothing underneath. Also means even growth.
This is 20x citizen clu048 cobs @ 1000 watts in a 4x8. 50 watts a cob. Guy ended up with really bad light stress and some bleaching. 31w per square foot. Notice the horrible canopy penetration?
This is 18x QB304s quantum boards @ 1500w in a 4x8 tent. 75 watts a QB. Absolutely no bleaching and he had some colas get as close as 4" from the 75w QBs. 46w per square foot. Notice how much better the canopy penetration is? The extra 500 watts is part of the reason, but the fact he cant even get bleaching 4" from a 75W QB at 46w a square foot is proof it's really decent.
The quantum board grower actually keeps the lights 8-12" usually. He was just moving stuff around and put a second scrog net so he raised it in the pic.
