PetFlora
Well-Known Member
Watts are not all created equal. 50w at 90 lpw is only ~ 66% of 50 w @ 140 lpw, as well as how they are being driven.
50w of low quality china-made emitters cannot be compared to Cree, Luxeon,...
It ain't about watts, it's about umols/m*/sec of quality spectrum developed specifically for mj.
Put the same 'wattage' of badly developed spectrum emitters over one plant v quality emitters over another. Do you really think they are the same?
How are we going to unconfuse the potential buyers, when we confuse the 411?
I like A51 use of umol charts, especially 2ft down and 3 x 3. Pretty impressive
50w of low quality china-made emitters cannot be compared to Cree, Luxeon,...
It ain't about watts, it's about umols/m*/sec of quality spectrum developed specifically for mj.
Put the same 'wattage' of badly developed spectrum emitters over one plant v quality emitters over another. Do you really think they are the same?
How are we going to unconfuse the potential buyers, when we confuse the 411?
I like A51 use of umol charts, especially 2ft down and 3 x 3. Pretty impressive
[/QUOTE]I know, but 28.8w/sqft. is pushing it for a light with no secondary lens. The reflectors machining quality do look impressive in spirit of all hans & grans products, but it's not going to make up for the lack of secondary lens by a long shot. This is more like a 12" x 12" with plants no more than 24" otherwise you're gonna get airy buds deal to me. I ran a pair of BD700's at 18" for a total of 1400w and even then only got about 18" of actual penetration meaning the buds were fully develop and the rest were small filler buds. One must consider even sunlight can only penetrate an honest 24-36" because leaves are specially designed to be very effective solar panels. This seem to be the max. because if you've ever grown a Humboldt size 9ft.+ outdoor tree, the branches pretty much max out at this length due to the sun's penetration limit because these monster will probably get bigger if it could penetrate any deeper. Hold up a leaf under the sun and examine the see how dark that shadow is and it will give u an idea how effective it is, leaving mostly weak deflected and diffused light left for the undergrowth. Plants rely more on the sun's movement to change the angle of penetration to enable direct light contact with the inner and some of the lower growth.
I'm not aware of any Chinese lights that can do it at 28.8w per square foot.
I've never used them, but 28.8w/sqft. it's 36% less than the recommended 45w/sqft. If these were secondary lens equipped, I would be much more convinced that 28.8W might do it, but they're not. I also notice u guys recommend the 190's for a 3x3', which would put u at only 21.11W/sqft. as this is less than half of the recommended 45W. Even if this was true, my standard workhorse testers 100x3w pulling 220w running my white spec. will put 55w/sqft into a 2x2" for $149 shipped. And yes, this factory offers the same Crees they install a well know brand and I trust them because everything checked out as spec'd on my other panels but I chose not to go with Crees because the small difference I can more than make up with sheer wattage without incurring extra costs. I realize that the Crees are more efficient, but not by 3x if you compare price performance and cost-effectiveness. Hey, I'm just a messenger but this stagecoach's armed. lol.
45w per square foot, sí.