Cree cob question ..... Is 100w / ft overkill ?
- Thread starter tekdc911
- Start date
vitamin_green_inc
Well-Known Member
Yeah I believe it would be way past the point of saturation. I think 40w of cree per sq foot is about the line to toe, but other more experienced members will chime in shortly
tekdc911
Well-Known Member
well then my plans just got cheaper
captainmorgan
Well-Known Member
I'm using 5 CXA3070 Z4 3000k at 1400 ma,that's 52 watts per COB in a 3x3 tent and pulling monster numbers.
tekdc911
Well-Known Member
the plants really like those whites ? I am still reading and trying to learn as much as possible .... but just from what ive read and seen pics of so far I AM for sure 100% sold on 3000k cree cobs
ttystikk
Well-Known Member
This comes out to just about 30W/ft². That's where I ended up with my setup, too- though I'm not using COBs. Yet!
tekdc911
Well-Known Member
Monkey see ... monkey do.......
cheers !!! I'll shoot for that number
salmonetin
Well-Known Member
...the eternal question... who speaks of par wats and who speaks of dissipation watts?.... when talking about w / ft2 or w / m2....
saludos
saludos
captainmorgan
Well-Known Member
I don't think you can go wrong with CXA,CXB,Vero or Vero2's 3000k to 4000k and shoot for around 40% or more efficiency and 30 watts sq/ft. You can go up to 40 watts sq/ft depending on which COB you go with and it's efficiency but I'm happy with 30 and don't think I can get much more yield out of my set up by boosting the watts per sq/ft.
tekdc911
Well-Known Member
Right over my head .....
vitamin_green_inc
Well-Known Member
Think he's saying we don't really go by watts per sq foot, but that's just him being like a grammar-nazi. Watts per sq foot as long as the audience knows what model cob and what the OP is looking for is an okay tool to make it easier to digest in people's minds. So you keep doing you OP and don't worry
ttystikk
Well-Known Member
It's also an easy yardstick to use when comparing light sources, even if it's not super accurate.Think he's saying we don't really go by watts per sq foot, but that's just him being like a grammar-nazi. Watts per sq foot as long as the audience knows what model cob and what the OP is looking for is an okay tool to make it easier to digest in people's minds. So you keep doing you OP and don't worry
salmonetin
Well-Known Member
...my pov... ...when you talk about w / ft2 or w / m2 ...you would (or must) remark if you are talking about dissipations wats or par watts... ...only my modest opinion...
pd....KP ...i dont think your argue ...and will not discuss with you ... sorry...
saludos
pd....KP ...i dont think your argue ...and will not discuss with you ... sorry...
saludos
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KarmaPaymentPlan
Well-Known Member
if everybody did this, nobody would argue that cobs/leds can't compete...my modest opinion.
captainmorgan
Well-Known Member
I think you need to balance what people can easily understand with the technical side. You can't expect everyone to take a crash course in LED tech and plant photosynthesis just to buy a light for a small grow. I'm sure there are plenty of people that hear all the tech speak and think it's just too complicated and buy HPS,whether it fits their needs or not. If your a enthusiast or going to make a large investment you should get educated and learn all the right terms but it's not for everyone.
tekdc911
Well-Known Member
i have been convinced and after seeing the prices for what one costs with the right led's in it ... I'm better off just building one :s any suggestions on a driver for like 500w of 50w cree's ?