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that's what we did with the CXB3590 COBs, we used more of them and also drove them at a much lower current than rated they were rated for 140 watts and we drove them at 25 watts making it 2.95 umol/j but all those numbers are from smart people in this forum that did all those calculations has...

yes, and higher yield, although much quicker finishing can be even better if the time cut is significant

increase in 20% meaning at least 3.6

think of it this way, even if you are limited by space you still benefit from the increase of efficiency because now you can either add more light and produce more or keep the same amount of light but add extra fans or a dehumidifier or whatever else might be missing to make your room perfect.

that's nice but we are looking for a DIY solution that can make those numbers higher within a reasonable price range of course but even x2 or x3 the market price is acceptable if the increase in efficiency is at least ~20%

unless of course there will be a clear side by side that shows that a little tweek in the spectrum will increase yield wich already been done on a small scale by greengeens on his YT channel when he grew with 3500 kelvin and 5000kelvin lights and we bearly seen a difference which is why I mixed...

because some people are limited by electricity not limited by space or by demand for highest quality stuff

It seems like the best commercial lights you can get nowdays perform the same as the DIY stuff we built @ 2015-2016 Cree CXB 3590 at 700ma was producing 64% efficiency or 2.95 umol/j with cooler Kelvin temps (good for veg) and high bin you could get even higher efficiency

yeah, I was writing that 3.2 number out of memory but then went to the website to check myself and saw it's 3.06 max. sorry for the confusion. but it's still a higher number and the model you are referencing is an older model. anyway the only reason I trust HLG is because growmau5 works there...

how are they the most efficient if they are only 2.9 μmol/j ? read the topic again, Horticultural Lighting Group is at 3.06 μmol/j nothing on the market is going to beat a DIY solution anyway

what is the "cree cxb3590 @700ma" of today? in 2016 my life changed when I saw growmau5 video where he pulled 1.96gr\watt with that setup almost 8 years have passed. what is the max efficiency PPF PPFD umol/j achievable today? seems like the most efficient commercial panels right now are from...

what if I told you no one give a shit and don't want to see or hear you?

can you guys at least change it for the LED section? Just try It. give it a go! come on! It will make this place a museum !

fart fart fart fart

dead forum. fgabisdfhgb;iasdfgaf asdgbifvhsdfi;uvbhasdfb adfgb'adfbhadfbujhadf'b

2 rooms 6m2 8 panels in each room. for now only one room is ready and in day 2 of flower ^^ Sneak Peak: damn it's bright ! !

yes, pre drilled. I'ts not that big of a deal to drill into aluminum as its soft. but if you mess up and brake drill\tap in the hole, all symmetric is gone and for me, that's a pain in the ass... in my case, ~1000 holes, sure I would mess up a bunch of times XD

he is molding his own parts (like the reflectors)

did you read what I write? all I want, is him to have some alternative in stock. I like buying all my stuff at one place. I'm not saying it his fault. we just need to show that we need some alternative, geez

Jerry replied today: "I understand your meaning, with the new reflector, the gap will be much smaller, you can try when you get them, I promise it will be better." I sent him the exact same pics as in the topic. how does he imagine the reflector will cover these gaps lul. nvm.. this is...