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is my math right on that? 1300 mW in, 18 mW out, ~1.5% efficient?

they always were, but are they actually cost effective now?

it says its 2.6 umol/J so its on the same level of efficiency roughly as the HLG and probably above the revolution (which i still dont think we have specs for)

they are just a super pain in the ass to program. totally non intuitive. keep fucking with it

cant beat that. it should be about the equivalent of a 600W SE HPS in electrical consumption,output, and efficiency make sure to hang it high as you can as those lenses really concentrate into a small space. 24" above the plants should do well for you

i cant recall ever seeing traces near mounting holes on a board

USB2000 they are a lot more than that, i found it used it needs a computer and the software is super expensive when the trial runs out the MK350Ns come up all the time on ebay for $500-$650. it actually does more as it measures CRI as well

the concept is simple. i have a $200 ocean optics that can do everything the MK350 i paid $600 for can do... ill always choose the latter self-contained option

its hard enough when you try to control everything and have one variable but there are really too many differences (spectrum, intensity, efficiency, light distribution) between the two, esp in the same tent with overlap, a little bit of efficient white light spilling over on the girls under your...

i dont but they are $20 on amazon

watt meters are cheap and useful

im sure you will grow good bud all around but doesnt seem like it will yield any useful data

added 5000k and 3000k QB V1s QB V2 on sale

would also be useful to know how the cobs are wired to the driver

you might get more action in the HID forum https://www.rollitup.org/f/indoor-growing.49/ i wouldnt duct more than 2 or 3 of the ACDEs in a row. if nothing else the "around the reflector" venting style has more pressure drop than a standard air cooled reflector

or look on craigslist for people practically giving away old HPS

its a free country if it was any other user i wouldnt think twice but hes one of the more long time regulars makes it a little easier to follow the conversation (says the guy with the most generic avatar ever)

everytime i see you post i think its a Ttystikk thread lol

they grow weed, isnt that enough?

thats what most people come up with when searching older threads crees were popular a few years back but they got passed by every other manufacturer (cizen, luminus, bridgelux, etc) on a cost efficiency basis