MeGaKiLlErMaN
Well-Known Member
That's for a 5x5 and that's full spectrum with IR , and lots of FAR RED, something COBs lack not to mention that's a SINGLE ENDED 1000w HPS , DE lights are even higher PAR numbers.
Alright I really not sure where you're getting these "facts" from.... But the standard of measurement is 4x4 and 3x3... Mostly 4x4.
During an unbiased test of all the different High end DE HPS systems they used a 4x4 standard. And according to that the Gavida Pro
1000W DE system puts out a solid...
620 PPFD at 24" in a 4x4
Growers House source:
http://growershouse.com/images/DE_TEST_INFOGRAPHIC.pdf
The sites themselves only ever advertise a 10% increase in PAR from single ended on their site.
You can add far red but its really not that important as many growers have demonstrated. However a red signal does help start flowering sooner. It is true that they do not have IR but when you're pulling 1.2G/W-1.9G/W then who cares? IR does help produce THC since the crystals that they make are like a sun screen for the plant and it does adjust as the IR does... but it produces it naturally anyways making that argument mute.
Again Ill back it up even more once I have my PAR meter.