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Are there actually any alternatives for Meanwell that are actually less expensive and not some no name ebay item

Edit: These are the ones http://www.digikey.com/product-detail/en/SI-N8U3312B0WW/1510-1248-ND/5258873 They're the LC series COBs with molex holders included http://www.samsung.com/global/business/led/lighting/component/cob/lc026b

That's true but LM-80 wouldn't be the industry standard if it wasn't reliable.

The Cree CXA/CXB chips have a higher lm-70 than 50000 hours depending on how well they're cooled/how hard they're run per chip. The lumen maintenance of the CXA2540 @1900mA with the case temp being 55 degrees is 90% after 55000 hours. http://www.cree.com/~/media/Files/Cree/LED Components and...

http://www.cree.com/~/media/Files/Cree/LED%20Components%20and%20Modules/XLamp/XLamp%20Application%20Notes/LM80_Results.pdf Cree has published their LM-80 results. The newer chips only have a test duration of 6000 hours more is impossible in a short amount of time unless they have time machines...

http://www.ledsmagazine.com/articles/2016/01/transcend-launches-broad-spectrum-led-based-t5-tube-for-horticulture-applications.html Transcend takes the input of academia and its customers in crafting products with SPDs for specific applications. “Many companies build horticultural lights with...

That's fair enough, if the heated water is being used then it serves a clear purpose.

I really believe that water cooling LEDs is overkill for pretty much anything below 200 watts (per COB).

Next 2x2 growbox I will buy a heatsink from those USA guys again. Ebay was cheaper but couldn't mount the driver on it without having to use spacers and was still very short on remaining space for other screws. Going to test of the Samsung SLE series checking if their 3500K compares with Veros.

Those are actually more expensive than Veros at the same wattage.

Those look like 2x 60x"5" watt (actual 120 watts per 60x5.) You could have easily fixed the 400 watt HPS heat issues by using a 250 watt HPS.

Yea, I'll do that.

Have to mount my driver in a peculiar way because heat sink is a little atypical and the fins are maybe a few mm too low to mount it on its side. It's a HLG185, 228mm long and 1.15kg heavy. The top is going to act like a nice lever and I wonder if my screws can take it even if I hold it sideways...

It's the phosphor man, it absorbs all the water :lol:

That's with any heatsink though

You wouldn't be able to go below 25C either way unless your ambient temp is lower than that or you're using a phase change cooler.

The weakest Arctic CPU dissipates enough for a 65/70 watt CPU (Alpine 11/64 GT_. COBs aren't CPUs, a 3590 is at least 35% efficient at +-100 watt so the CPU heat sink only has to dissipate 65 watts of it. COBs are also much more resistant to heat than a CPU...

They don't show the part number of the COBs. Hard to know the efficiency that way, but Cree COB is most certainly more efficient.

ACTION NOW grows very high tomatoes