is a red/white panel fine?

[Bueno Time]

I am beginning to understand. . . . .

What size is your grow space going to be that you are trying to cover with light?

 

[sammyz2646]

Eventually I intend to potentially fill 2 flowering rooms ( 15' x 15') and 1 veg room (18' x 15') with higher wattage LED COB's. I'm trying to slowly get away from HID's but am going hybrid as I step forward with that goal. Right now I have a bunch of misc. supplemental led lights and DIY led's supplementing my HID's.
I'm not sure which group of DIY parts to use, but I do really appreciate the ability to spread say 10 - 100 watt COB's around the room vs relying on 1 or 2 giant hot 100 watt HID's emitting from a single location.

I want to isolate and assemble the ideal set of parts, with regards to current available technology, and run things bright--- but not uphill, into the wind, so to speak, so I will listen to everyone's educated input.


Another note for me here is that I have purchased several other effective LED lights, from various LED companies, but I really don't like lots of heat and intensity piled all in one small-ish footprint for lots of money, with some questionable, potentially unnecessary spectrums / or colors not needed. These may work well inside small tents, but not applicable when you need many lights to cover the space I'm working with. Having the perfect color of light being delivered, at many different points of inception, is very appealing to me. Instead of "huddling" all our plants under a single light source or 2, these 100 watt cob's should allow a guy to keep thew entire growing region suitable for even light distribution, and eliminate those shaded corners we all have learned to live with, until now

Efficiency is near the top of my list , BUT it takes a distant 2nd to me achieving maximum usable light evenly distributed across my grow room leaving NO weak corners. I will soon be buying this apogee light meter to verify these desires



http://www.ebay.com/itm/Apogee-Quantum-Light-Par-Meter-MQ-200-/231183400028?_trksid=p2054897.l5658

 

[3dDream]

Once you get down to ~36% efficiency you might as well be using a 600w or 1000w HPS

What about infrared? I have read that an HPS can waste 35% of it's light energy on IR. If the efficiency is the same the amount of heat will be different because there is no IR in an led.

 

[hempfield]

Hey guys,

Can I ask for your opinions about CITIZEN high power COB Version 2 vs CREE CXA , especially for the following models :

CITIZEN CLL032-1212A5-273M1A2 up to 64.4W Specs (http://www.tme.eu/en/details/cll032-1212a5273m1/power-leds-others/citizen/cll032-1212a5-273m1a2/)

CITIZEN CLL042-1218A5-273M1A2 up to 96.6W Specs (http://www.tme.eu/en/details/cll042-1218a5273m1/power-leds-others/citizen/cll042-1218a5-273m1a2/)

CITIZEN CLL042-1818A5-273M1A2 up to 144.9W Specs http://www.tme.eu/en/details/cll042-1818a5273m1/power-leds-others/citizen/cll042-1818a5-273m1a2/

This COBs are more easily to find in Europe than Cree CXA. Can we use them instead of CXA ? I can't find detailed information about the efficiency, output lumens and spectrum (as for the CXAs).

L.E. Some more detailed information found later : http://ce.citizen.co.jp/lighting_led/en/products/COB_series_ver2.html and a useful simulator : http://ce.citizen.co.jp/lighting_led/en/products/notice_Simulator_ver2.html

 

[morgandecaptain]

Can you find Bridgelux Vero's?

 

[hempfield]

Even more expensive than CXA (no EU stock).

http://octopart.com/partsearch#!?q=BXRC-27E10K0-L-03

At Digikey US $36.99 : http://www.digikey.com/product-detail/en/BXRC-27E10K0-L-03/976-1153-ND/3913136
At Farnell UK £73.38 : http://uk.farnell.com/bridgelux/bxr...e-10000lm-2700k/dp/2308612?Ntt=BXRC-27E10K0-L
At Newark US : priceless http://www.newark.com/bridgelux/bxrc-27e10k0-l-03/unknown/dp/62W5793?ost=BXRC-27E10K0-L

 

[morgandecaptain]

Hey guys,

Can I ask for your opinions about CITIZEN high power COB Version 2 vs CREE CXA , especially for the following models :

CITIZEN CLL032-1212A5-273M1A2 up to 64.4W Specs (http://www.tme.eu/en/details/cll032-1212a5273m1/power-leds-others/citizen/cll032-1212a5-273m1a2/)

CITIZEN CLL042-1218A5-273M1A2 up to 96.6W Specs (http://www.tme.eu/en/details/cll042-1218a5273m1/power-leds-others/citizen/cll042-1218a5-273m1a2/)

CITIZEN CLL042-1818A5-273M1A2 up to 144.9W Specs http://www.tme.eu/en/details/cll042-1818a5273m1/power-leds-others/citizen/cll042-1818a5-273m1a2/

This COBs are more easily to find in Europe than Cree CXA. Can we use them instead of CXA ? I can't find detailed information about the efficiency, output lumens and spectrum (as for the CXAs).

L.E. Some more detailed information found later : http://ce.citizen.co.jp/lighting_led/en/products/COB_series_ver2.html and a useful simulator : http://ce.citizen.co.jp/lighting_led/en/products/notice_Simulator_ver2.html

Had someone look at these and from the specs he quoted if they're run at 50% they would compare to a mid bin CXA3050 run at 50% but they are a little less efficient than the CXA's. Don't really know about the quality tho.

 

[guvoo]

best offer on cobs in eu. nichia shouldt be on par with cree

http://www.leds.de/en/High-Power-LEDs/Chip-On-Board-LEDs/

and one more...
http://www.led-tech.de/en/Chip-On-Board-Technic/Bridgelux-c_134_210.html