4 X 5 grow room light help needed.

k dog

k dog

New Member
I am designing a 4X5 grow room and am thinking of using 8 cree cxb3590 3500K cobs. I have two questions about this setup.
1. Will the 8 11,000 lumen cobs be enough to cover the footprint?
2. If it is then should I go with 1 mean well hlg-185h c700 or 2 hlg-185h c1400? I understand that it will work either way but I'm not sure what the pros and cons would be for the different drivers.
Any help or suggestions would be greatly appreciated.
 
qballizhere

qballizhere

Well-Known Member
k dog said:
I am designing a 4X5 grow room and am thinking of using 8 cree cxb3590 3500K cobs. I have two questions about this setup.
1. Will the 8 11,000 lumen cobs be enough to cover the footprint?
2. If it is then should I go with 1 mean well hlg-185h c700 or 2 hlg-185h c1400? I understand that it will work either way but I'm not sure what the pros and cons would be for the different drivers.
Any help or suggestions would be greatly appreciated.
Click to expand...
1. we have talked about it before it will work and it will allow you to grow but personally if I had to stick with that cob I would use 12 and not 8 the difference is 250 ppfd. I would look into the luminus or citizen more light less cobs better efficiency less upfront cost. A 3590 is $33-$35 each and the luminus cxm22 is $19 citizen 1818 $22
2. If you take the 8 cobs and you use a 1400ma driver your ppfd is going to be about 495 at 700ma your ppfd drops to 262. lower amps more cobs better efficiency from the driver higher amps less cobs less efficient driver. It's a trade off
 
Johnnygrows420

Johnnygrows420

Well-Known Member
k dog said:
I am designing a 4X5 grow room and am thinking of using 8 cree cxb3590 3500K cobs. I have two questions about this setup.
1. Will the 8 11,000 lumen cobs be enough to cover the footprint?
2. If it is then should I go with 1 mean well hlg-185h c700 or 2 hlg-185h c1400? I understand that it will work either way but I'm not sure what the pros and cons would be for the different drivers.
Any help or suggestions would be greatly appreciated.
Click to expand...
How many plants you trying to do
 
k dog

k dog

New Member
Johnnygrows420 said:
How many plants you trying to do
Click to expand...
qballizhere said:
1. we have talked about it before it will work and it will allow you to grow but personally if I had to stick with that cob I would use 12 and not 8 the difference is 250 ppfd. I would look into the luminus or citizen more light less cobs better efficiency less upfront cost. A 3590 is $33-$35 each and the luminus cxm22 is $19 citizen 1818 $22
2. If you take the 8 cobs and you use a 1400ma driver your ppfd is going to be about 495 at 700ma your ppfd drops to 262. lower amps more cobs better efficiency from the driver higher amps less cobs less efficient driver. It's a trade off
Click to expand...
Well I want to use the cree cobs cause everyone I have talked to has said good things about them.
 
Tim Fox

Tim Fox

Well-Known Member
k dog said:
Well I want to use the cree cobs cause everyone I have talked to has said good things about them.
Click to expand...
i used to use cree cobs,, i still have my old crees,,, but now i am using 1812 citizen cobs,, lovin my citi lights
 
Tim Fox

Tim Fox

Well-Known Member
They are a different power so it's not a direct comparison like the poster said before they are
They are lower in cost so you can put more cobs in the space and get better spread those things result in betteryields but I haveto tell you it has allot to do with the grower and the medium as well
 
T

TitSprinksMcGee

Member
I think you'll need more. I'm doing a 4x4 with 10 3590s in a 3, 4, 3 configuration running off 2 hlg240 1400b meanwells, as shown in one of growmau5's videos. You can also do 12 in 3 strips of 4 but then you need two 240-1050s instead. Using a 4x5 you wouldn't want much less than that. Mine should be 56% efficiency and the 12 cob setup I mentioned is 61% efficiency but less light overall. I haven't used the other lights the other poster mentioned but the cxb3590s are tried and true, as are those ratios.
 
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