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i have cree xpe strips on my site

50K would also work, it would just be at full brightness 2/3 of the way up the dial

i thought i was crazy. it most definitely said this yesterday

thats a 1.5 meter x 1.5 meter, right?

not quite sure if i understand that site's angle "I have proven that this new LED light technology is at equivalent to HPS/MH lighting, often times surpassing it" ok ill buy that, it seems to be in the same 1.3ish umol/J range but then it says "our light shines through the competition to...

ask them if they have a 3rd party report from an accredited lab. thats the standard these days. see chilled's site for examples

for that current you could use 16 or 18 solid if you can find a breaker small enough to protect it the IEC sockets that take the AGC fuses are handy as they make them in all sizes agreed that stranded is a pain in the ass to solder, esp #12!

for that current you could use 16 or 18 solid if you can find a breaker small enough to protect it the IEC sockets that take the AGC fuses are handy as they make them in all sizes agreed that stranded is a pain in the ass to solder, esp #12!

please make sure your heatsink(s) is grounded before you potentially become the ground inadvertently

http://www.instructables.com/id/A-simple-DIY-spectrophotometer/

cheaper and more effcient

they were in 2016 or so things move fast luminus CXM22, citi 1818, vero B, vero C all better choices

thats about as cheap as they get, and is a bargain for that feature set, imo

one is a cob, one is a mid power diode (which comes in several different models like 561V, LM301B, etc) CXB3590 is about middle of the pack these days and is overpriced relative to its competiton. You can get teh same performance for half the cost or better performance for the same chip cost

yup. you might want to reconsider that choice of cob though, theyre a bit dated

you can use a 320h-36b and wire them in parallel

yes for 5 years now better yield than HPS for last 3 years there isnt one. the more you spend the higher the efficiency goes.

right- they compete. i guess my point is they both point to the same cause/cure - low temps and low transpiration.

i think he means cal and mag deficiencies are common to be seen together because they are both uptake related to transpiration

ive got a bunch of those from the 90s. they are decent but no match for todays computer-designed reflectors. Good for free but prob not worth paying for make sure to adjust the height of the bulb using the slots on the socket mounting flange so it is centered in your fixture. obviously 400W MH...