cree

This is not my first grow but I am seeing really weird stuff since I switched from Marshydro 300W to my 4x CXB3590. Plants have TONS of white/yellow spots which at 1st look like mites but I am 99,99% sure it's no bugs. Plants also feel crumbly dry, and some of the plants simply don't look...

Welcome to what will hopefully become an informative thread. We will expand on existing ideas and explore new possibilities. I will post a parts list with prices and build related videos here. Special thanks in advance to GrowMau5, Gene, and some man named Jerry who resides in China.

Driver specs: model: PT1004F-60W (60W) in: 100-240V out: 55-100V (0.69-0.72A) Can I run three CREE CXA2540 on one driver? I am still not understanding how this works. So 3x36V COBs like the CXA2540 (I mention the CXA2540 because I can get those VERY cheap) = 108V - but [email protected] = 75.6W. So...

What's up fellow RIUians. I wanted to make a thread on thermal readings, as I haven't seen hardly anyone document thermal readings for their cob units, whether through commercial or DIY and I find it to be very important for us who want our lights operating at optimal temperatures. From what I...

Hi , I'm new to constructing LED COB lights Tinker & hoarder of parts ,I built highend watercooled PC's for rich teenagers back when PC gaming was the only game in town that Rocked ! That waz years ago .................... Damn platstation/xbox so I familia with setting sinks ,fans,metal...

Recently finished building my first LED lamp. figured id post some pics to keep track of it. Just flipped em to 12/12 2 days ago. vegged under 600w hps for a week or so until i found a 600w MH bulb i didnt even realize i had! Using FFOF. theyve had great white for the roots and bs molasses to...

I noticed today a couple Hewitt Packard printer power supplies that read 32v output and I am wondering if it would be a good idea to run Cree COBs with it. Would buying meanwell drivers be worth it if I already have these? Can someone help me understand the downfall to using these compared to...

This is my first real post on RIU, so first i would like to thank the community for making this one of the most resourceful websites on the interweb. I've been lurking for a few years and have gained tons of priceless knowledge from you guys, I now have 3 grows under my belt with HIDs that all...

(This thread is open to anyone who would like to comment.) I wanted to grow a plant with MiracleGro to see how it would work if someone were on a budget. I chose MG's Tomato product because it has the sanest NPK ratio (1 - 1 - 1.17. The All-Purpose product is 3 - 1 - 2. I think that's too high...

Hello all, First time poster here. Long time reader. Been reading the forums for about 6 months now. Finally just went for it and ordered: 10 cxb3590 3000k 72v CB 2. Cxb3590 5000k 72v 6 mean well hlg -120h -c1050 I plan on running 2 per driver. So here are my noob questions: I have options...