Grow light competition. Timber grow lights 16 CXB 3590 800w fixture VS 3 CLW SS 5500 1200w
- Thread starter BM9AGS
- Start date
BM9AGS
Well-Known Member
Areas are very close per watt. I believe the CLW are just a couple watts per sqft more I can't remember and don't feel like calculating at the moment.
BM9AGS
Well-Known Member
3500k 80criNice one for specs on the CLW spectrum, makes my decision much easier...
Personally I think if BM9AGS is running all 3 bands on the CLW vs the 3590 then my money (for now) is on the 3590 for higher gpw and better quality product.
@BM9AGS what's the Colour temp and CRI of those 3590's?
CannaDaddy
Active Member
Just installed ss 550 any knowledge will help. Have controller also. Seeking spectrum settings and times.
Thanks
Thanks
Jimmyclone42
Well-Known Member
To be an even match they both should be 800w or 1200w..This battle is a little biased in that respect.. But i will still put my quality vote for the cobs.. Osram does make a quality product for sure.. No doubt about it.. But i still vote cobs.. This is awesome to watch..
Johnnycannaseed1
Well-Known Member
Is this what the CLW spectrum looks like when you are running all 3 bands?
Cheers
do you have a graph to hand that shows the spectral output of CXB 3500k 80CRI... Tried searching for it and this was the best I could come up with don't suppose you know whether this is accurate?
Johnnycannaseed1
Well-Known Member
Johnnycannaseed1
Well-Known Member
Put it this way if both of the grow spaces are equal sized and the only difference is wattage consumed in each space, then let's say yield was exactly the same in each space then it would show how COB tech using 57ish% less energy than the CLW can effectively keep up and produce the same yield... e.g COB is superior.
At this rate it is pretty amazing that the COB plants actually look slightly better considering they are using 57ish% less energy in order to do so.
It will be real interesting to see how this grow pans out because irrespective of PAR watts those SSL's kick out slightly more radiant watts than the COBs.
Typical radiant efficiency on SSL120's as follows;
120 degree 450nm = 69%
120 degree 660nm = 56%
I estimate the COBs to be around 50 - 56ish% (feel free to correct me if my estimate is off)
Therefore I am estimating the 3 CLW fixtures probably kicks out 57ish% more radiant watts than the Total COB fixture (possibly even more), although this figure does not take into consideration driver losses/effiency between the 2 lighting systems but even then I am willing to bet that's negligible.
So at this stage the COBs are seriously kicking ass... Harvest time (yield/quality) sure is going to be interesting and telling because those CLW's have got a 57ish% deficit to overcome just to be on PAR with the COBs
CannaDaddy
Active Member
Is this what the CLW spectrum looks like when you are running all 3 bands?
Cheers
CannaDaddy
Active Member
Here is what I found
CobKits
Well-Known Member
or it could demonstrate the law of diminishing returns for wattage in a space
he never said the spaces were the same size, he said watts per sq ft were the same approximate density
Budies 101
Well-Known Member
It sucks, it seems so rare to get a real side by side. 1200 VS 1200 would be great to see as if the Cree wins even at 800watts I would have liked to see the numbers on a win at 1200watts in this case.
Looks great tho and I cast my vote for Timber lights. hard part is being 400 watts less can equal a lot of weight.
Looks great tho and I cast my vote for Timber lights. hard part is being 400 watts less can equal a lot of weight.
FortuneSeeker
Member
Blue and red... this is chinese spectrum, lol. I kid, I am sorry, but I can't coupe? with against nature thing. Man the only time the sun will have that spectrum is at the end of this world, probably, give ot take sone UV-B, UV-C
)
Johnnycannaseed1
Well-Known Member
Not really if CLW test growspace is 50% larger then it would only be using 7% more radiant watts across it's total area which, you would think is kinda negligible. I bet if you increased COB output by 7% (depending on his current PPFD) you would more than likely see an increase in yield and possibly quality.
My thoughts at this stage are, the Blurpleish spectrum is inferior to the COB spectrum.
I don't believe it is about law of diminishing returns, hopefully BM9AGS will come back soon and give us the size of each area
I was unsure of size, hence I asked the question below for confirmation lol, but it seems I missed the above but from the looks of things the CLW grow is in a larger area, which will negate law of diminishing returns if you ponder on it.
Last edited:
BM9AGS
Well-Known Member
CLW is covering the company recommended 4'x8' grow area for 3 lights.
That's 32sqft. Which gives 37.5 W per Sqft.
The timber kit is 5'x5' grow area
That's 25sqft. Which gives 32 W per Sqft
BM9AGS
Well-Known Member
CLW is a full spectrum light. It's white based with 450 and 660 added.
BM9AGS
Well-Known Member
Grams per watt should be as un biased as I can make it......not like I wanna turn off 1 light just to make it watt per watt. Then the sqft wouldn't be the same. Gpw will show which is best for sure.
Budies 101
Well-Known Member
Cool.