I'm just throwing this link up to show you what I'm talking about.
https://horticulturelightinggroup.com/products/hlg-550
But the important thing is the info
Power 250-515 Watts
Voltage Range 90-277 VAC
LED 1152 pcs Samsung 561C
Flowering Footprint 4.5'X4.5' or 4'X5'
Veg Footprint 6'X6'
System Efficiency 161 Lm/W
System PPF Efficacy 2.4 μmol/joule <
This is what you want to know that most BS LED companies don't tell you
Total output 1265 PPF
Dimensions 26"X20"x3"
Recommended Mounting Height 18-28 inches
This is one example from one of the reputable companies that advertise on here. There are lots more who are creating genuine quality LEDs.
HLG
Timber grow lights
Tasty LED
Pacific lighting concepts
ChilLED
There are probably more I cant think of. Either way look up all of them on youtube, you can also find all of them on here, they are members, do a lot of research and testing and have 1000s of happy customers who would be happy to recommend.
I'm not affiliated with any of them, but I own 660w of cobs and 570w of quantum boards. Both from HLG, but the COBs were a DIY project, which is very common but not everyones cup of tea.
As I say take a look in the led section and ask around. There are plenty of grow diaries with these types of light.
look up
@lukio ,
@The Dawg ,
@zypheruk ,
@Growmau5 ,
@captainmorgan ,
@NapalmD those are a few members on here who I know have good documented grows with quality LEDs. There's many more but I'm too stoned to remember much.
I cant recommend enough that you check out growmau5 on youtube. Very well documented grows. Also check out greengenes garden while on youtube.
Good luck, its probably going to be a mind fuck but in a good way.