Best CRI...

EL Picos

Member
Hi, I'm newbie in led, in luminus CXM 32 2700K what would be the best CRI vs Lumess for only flowering 80, 90 or 95?
I will built my lights on big 220mm X 100mm round heatsink and a possibility of 150 watts each.

Thank You!
 

Airwalker16

Well-Known Member
Hi, I'm newbie in led, in luminus CXM 32 2700K what would be the best CRI vs Lumess for only flowering 80, 90 or 95?
I will built my lights on big 220mm X 100mm round heatsink and a possibility of 150 watts each.

Thank You!
Make sure that base is THICK. 10mm minimum.
 

EL Picos

Member

Yess they are heavy, cold forged alu, 2.25 Kilos each.
I'm hesitating between 2700K and 3000K, always had great result with Hortilux HPS that are very low K!
 
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Rocket Soul

Well-Known Member
Vero 29 C is a good alternative.
Id seriously suggest you look into better light distribution. 600w from 4 cobs isnt the same as 600w from 15 cobs. Also high powered cobs like that needs a lot of headroom which means you lose light to t walls.
 

EL Picos

Member
Vero 29 C is a good alternative.
Id seriously suggest you look into better light distribution. 600w from 4 cobs isnt the same as 600w from 15 cobs. Also high powered cobs like that needs a lot of headroom which means you lose light to t walls.
I don't have any experience with cob, but I want make some test to find the maximum PPFD that some genetic can take with CO2. I read a couple of time that plants can take in best conditions 1500 to 2000 umols.
How many watts by 1.5 X 1.5 foot can reach that?
 

EL Picos

Member
Guestimating around 150-200w depending on what leds you use.
Ok and only one cob by 1.5 X 1.5 feet would be good?
And if I built up a more big room in future instead of a lot of small cobs I will be able to put these big cobs higher and give more watts on potentiometer, I don't know!!
 

Rocket Soul

Well-Known Member
We tried high powered cobs and definitely prefer a more spreadout setup, like quantum boards on half power or strips.
I feel that with cobs your ideal is 1 per squarefoot, 25-40w each.
But there are many ways to do this. But lower power per chip will allways reward you, and in several ways.
 

EL Picos

Member
I said 1 cob x 1.5 X 1.5 foot but in reality I will have 16 cobs for 2 X 8 feet cabinet 1 cob by square feet 16 X 150 watts the heatsinks will be out the cabinet, I know that is a bit crazy but these cobs will serve in a more big room where 1 cob by square foot would be a bit crazy too. I will have the power on dimmer.
Do you think that 40 watts X square feet with CO2 is enough to obtain the maximum yield and quality?
 
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