I've got 5x BXEB-L0280Z-50E1000-C-B3 running on 65 Watts and the temps on the diodes are around 150f. On the product page the max temps are 180f, is it fine to run them this hot or will it significantly lower the life of the leds?

I think its 1.5-36v so it can be set to 12V

Im trying to build a cob LED light array with 10x10watt cobs (I might double the amount of cobs later on). Their specs are 9-12 volt and electric current 900MA. Ive got a 12v 16.5A 203watt psu and I need to get a current regulator so i dont burn out the lights. Does this Buck converter look like it ...

Its mostly just for fun and trying to find a good use for my electronics that are just gathering dust.

My rent is fixed and it includes electricity so efficiency isnt really an issue on this build. Just trying to save money on a psu/ have a use for these pc/ xbox power supply units.

would a buck converter solve that?

Yeah this is my first build, why do you suggest not going with a PC or Xbox PSU?

Im going to be building the Bridgelux Gen. 2 2'x2' light from http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/# Now my space is actually 16"x16" and doing some calculations I only need 10 strip lights for the optimal lumens. The person who showed me this used HLG-60H-C350A psu f...

I actually dont pay for electricity so thats not an issue, I mean technically its built into the set cost of my rent, but I dont pay more or less depending on the electrical bill.

Im building a small grow box of 16"x16"x24" and I was thinking about getting one of those Full spectrum "1000 watt"(180 watt) leds for around $150 cad when someone showed me this build guide (http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/#) and said it gave him really good res...