I wrote to Fluence (formerly BML) and directed them to this thread and asked them to please respond. They did by the end of the day (Money for amazing customer service).
'Within the thread people are stating that we use cheap diodes and that we have less PAR than a 600 single ended HPS...we use Osram, Samsung, and LG. These are the top diode manufacturers in the world, not only are we using the best diodes but we also purchase based on top binning, meaning we do not use second tier diodes even from the best manufacturers. All of our manufacturing is done here in Austin TX.
Our team includes an in house PhD Photobiologist and Enigneers.
The numbers that people are quoting are PPF, not PPFD. there is a huge difference between these numbers because it does not account for the amount of light actually hitting a target. If you see a Umol/S = PPF, Umol/M2/s = PPFD.
If I have a total output released by a HID bulb, 50% is being radiated in the opposite direction of the canopy and reflected back. This brings the PPFD of a source down significantly. From there the light needs to travel from a 2'-3' in order to hit its target, also bringing down usable light at target. What this also does not take into account is dust accumulation (if air cooled) and bulb degradation ( Not applicable with LED). Bulb degradation is a huge disadvantage because all stated out put by manufacturers is at day one, which is not even considering the change in spectral composition due to the degradation.
Here are some actual PPFD numbers produced in field taken with a $1,200 Li-Core PAR meter. These are all Double ended 1000W HPS
There are so many more inputs that come into play here, efficacy, spectral composition, life span, labor costs, thermal management etc.
HERE is a link to an early adopter of SPYDRx Plus who has just yielded between 3-4 Lbs with our lights.
HERE is a SPYDRx (smaller light) customer who just got 611.2 grams = 21.6 oz = 1.35 lbs. That's 1.8 grams per watt with NO Co2!
HERE is a link explaining some of the metrics we use to define what is important within the lighting market.
In general, I don't like to bash on other companies on the market. Everyone has there place within the grow room, whether they cater to home hobbyists or commercial cannabis production. There is a wealth of misinformation and misunderstanding in the cannabis industry. I like to just state where we shine as opposed to where others falter.
I am attaching a study done by the University of Utah regarding the efficiency within the horticultural market for your consideration.
We appreciate your business, I am 112% sure that your success will show most growers that we are atypical within the LED market. If you have any questions regarding the deployment of your fixture or best practices when adopting new and powerful technology, please let me know. "