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We still haven't updated our website, we're making documents for LUMA led grow lights :)

Hello everyone, this is Robin from Geyapex Technology, recently we're to launch our newest LUMA series cob led grow lights, and before that, we hope to work with some professional growers to help us test our lights and help people know our lights better, so anyone who ever posted professional...

here is the spectrum diagram of 4000k Ra95

Thanks very much, learned again...we also have one 4 cob bar, and we wil test PPFD soon, so may I know which distacne you may like to know the PPF value

may I know how much power on the wall when you hang the light at 12''? because some of our clients ever burned the plants at that distance, also the footprint will be very limited at 12''...:confused::confused::confused:

OK no problem, 16'' 24'' 32'' is good?

oh sorry I just found my mistake, the chart is at 24'' instead of 32'', we tested 24'', 36'' and 48'' PPFD, I will correct it soon, and yes, we will hang the light closer and please suggest 3 distance which are frequently used by growers you think, thanks very much!!

the problem is when people can't change the power draw of the light, and can't adjust the hanging height, but they want higher PPFD at some certain area, then they have to use optics lens to make it, that's why we see there are different optics lens with different degree on market, the...

actually it's impossible to make the same uniformity by lens and without lens at different height, the PPFD uniformity of without lens is always better than with lens, it's not matter of height but depending on different focusing way of light, if you use 90 degree optics lens on the light, the...

Here is the result... it's easy to see the difference between with lens and without lens, which one do you prefer? we have both haha