I've postet a datasheet about the used AltaLED COB's in the other thread about these lights. You should read it and compare it to current 2018 LED's. These COB's were not bad as they came out in 2014, but today they're outdated. Only 80-90lm/w in CRI90+, current quality brand COB's like Bridgelux, Citizens or Luminous with that spectrums can deliver up to 150lm/w.
These company never cames big and they still sell their old 2014 COB's because they never got really successful.
https://www.rollitup.org/t/american-led-company-light-installed.965620/page-4#post-14288287
It will grow for sure some quality bud but it is simply not as good as you think. That's a fact!
The LED market is unfortunately unmanageable for LED beginners. It usually takes you a few days to familiarize yourself with and get an overview of the current top products.
The market is full of outdated lights that fill manufacturers' warehouses and they somehow have to get rid of. Giving away a few for free to generate cheap advertising is a smart idea and may work in other forums.
However, this does not work here, because people usually end up here on RUI when they realize they've been ripped off by scammers like this.
Here they learn which LED's are actually the best, they learn what PAR, LER, QER, μMol/s, PPF and PPFD means and how to calculate the efficiency of their own lights in μMol/j.
If you develop a better understanding of this, you will quickly learn how to separate the wheat from the chaff.
God thanks, you got it for free and did not waste any money on it. Test it and compare g/w results with HPS and current LED tech. With current top bin diodes a good grower can yield "at least" 1,5-1,7g/w.
So this is the standard by which you have to measure your own results.