Thanks so much for your reply. That's really helpful.
I search the quantum board kit on Amazon and I don't think I can set up them now. So I prefer to buy a fully setup lamp.
I check their pages and mostly of them don't provide the data you mentioned above, while I l found similar product like the lamp I posted and there is one review showing some number
View attachment 4325063
I didn't know that number but that's a positive review.
SO can you tell me what that number is and is that lamp considered good? Thank you
That's a lux/lumen meter in the picture above and 3600lx is extremely low. I grow with up to 60.000lx, lol!
Also a lux meter is the wrong device to test such a blurple fixture.
Lux meters are created to the human eye and they have a green filter built in because green is the brightest for humans. Plants use green light too but only when there is already enough blue and red light. They use the whole spectrum, filters are only needed at the ends of the spectrum(below 380 and above 750nm).
Those sensors are called PAR meters and they measure "photosynthetically active radiation".
Can I ask for your location? Continent is enough... And I need to know your budget.
I ask because it's hard to find good LED lamps in the EU zone.
LED-tech.de has the Zeus board XL for instance. (99€)
https://www.led-tech.de/de/ZEUS-308-XT-High-Performance-KITs
It's a 140w board which needs no heat sink! You only need an Meanwell LED driver like the HLG-150H-48B or ELG-150-48B(b means dimmable). The also have full kits and the how-to is the same like with Quantumboards.
To set up Quantumboards is as easy as it can be, bro.
A full kit contains the board(s) and a siutable heat sink and a driver. You need only to poke-in the 2 DC wires of the driver into the boards on board connector, screw the board onto the heat sink, add a wall plug on the AC side of the driver, install the hanging kit and voilá, done!
When you have your kit (which contains a how-to usually) and you have still issues you could come back, tag me and we do it together.
When you have it done you'll laugh about your worries, lol!
Believe me, these blurple fixture you find on am4zon/e3ay are not worth it. 99% of us have tried such a piece of crap and they do not deliver enough light nor a plant siutable spectrum.
A full spectrum is not pink!!!I t's white like sun light!!!
Plants have adapted to sunlight in millions of years and they use the complete range of from 285-800nm. Green light for instance is only partwise reflected(for this reason they look green), but most of it is used in the deeper plant regions (intercanopy). Red and blue wavelengths are used directly on the outer canopy.
DIYLEDUK.com is also a good EU source for LED lights and the owner is really a good one and very helpful. Top reputation and well made fixtures!
https://diyleduk.com/
You can get kits with boards or strips with Samsungs world leading LM301b diodes and you can also get pre-assembled fixtures if you still think you can't do it yourself.
Shipping cost are probably a bit higher because of a bigger package but the assembling is free.
Forget the fake reviews you see on the am4zon website. Its just nonsense!
If you read them read the ones with only 1 or 2 star rating.
3600lx of a blurple spectrum means ~70 - 80μMol/s PPF in the best case.
60.000lx of a warmwhite 3000°k spectrum means ~850μMol/s PPF and you can use it as all-in-one spectrum for germination, veg and flowering. Just dimm it down if needed.
These chinese blurples use the cheapest EPIstar diodes available. No Cree, no Samsung, no Luminus or other top brand diodes like Osram. Drivers are the cheapest too and you'll see burned out diodes within the first few month. There are only a few good blurples available currently but these lights will cost and you don't find them on am4zon.
When I look 6 years back I would have been glad someone had prevented me from buying 2 shitty Mars 300 reflectors, lol!
300 bucks in the trash bin and 3 month wasted time!!! Lots of us have done the same mistake(probably +90% of us) and we all have learned it the hard way. Those blurples are crap and not worth a try!!!
Believe me, if you want to be successful take something with a white spectrum. Either build from hundreds of high-end midpower diodes(like Q or Zeus boards or Sammy/Bridgelux strips) or created with top brand COB's (Luminus, Cree, Bridgelux.. like from Timber growlights).
It really depends on your location and the budget you have to play with.
For a good LED light you pay ~1$/wall watt minimum and for C3 plants like cannabis or tomatoes you need between 30 and 35w per ft² or ~330-380w per squaremeter. That means 120-150w for a small 2x 2' tent(60x 60cm) or 480-600w for a 4x 4' area(120x 120cm).
