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No, you can run the 3590 in either voltage you desire, 36 at 3.6 amps or 72v pulling 1.8 amps. Same lamp, same power, different voltage.

Thanks for all the likes, and trophies, I am finishing construction this weekend on my first NFT table, it is 16'x4' with 78 grow sites. I looked and don't know how to send a "like" or "trophy" back to people? Thanks

OH, Supra, meant to say, you can run the COB on 36, or 72v, 1.8vs3.6 amps

Oh, and also, Yes I will have a pump running the water through the cooling tube heat sinks, I am planning on just hoping all goes well, and maybe incorporating some-type of thermal switch that the driver power would have to run through, in the event of a possible overheat scenario......

Hey Supra, Thanks for your interest, and well given advice!! I am new to the forum as I said, but have read a couple of your other threads your in, and have to say, I like your style. I had not done any previous conversing with anyone about the switch to LED's, or other peoples ideas on the...

Hmmm....Thanks for the reply! I will have to look into that now. If anyone else no any better please chime in. I was short on time earlier but wanted to jump into this thread, I admit at the time did not see there was over 100 previous pages, and am just now to page 10 to catch up and not be...

Sorry, forgot the driver link http://www.amazon.com/Genssi-Regulated-Switching-Power-Supply/dp/B005CLCJA6/ref=sr_1_17?ie=UTF8&qid=1420494902&sr=8-17&keywords=32v++power+supply

Here are the 8 drivers I am using, 4 led COB's per, I am also ditching the ideas of hundreds of dollars to spend on heat sinks, as I am using 2x2 inch 1/16" thick aluminum tubing, and running water through them, all of this is covering a 16'x4' NFT SOG table, hosting 78 sites. I have grown a lot...

Hello all fellow fellowers, New here to the forum, Was just searching the use of these Cree CXA 3590's for indoor growing, as I have ordered 32 of them, but in a 27000k, from Digikey which was the cheapest I could find them...

Hello all fellow members. Thanks for stoppin by! I am a fairly newer grower, but have been doing pretty decent (just under 1lb/per blue dream ladies) But of course were all here for one reason and one reason only....TO GO BIGGER!! My whole goal in mind is size per plant, why would you want...