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those are fine ill always choose luminus cxm22 over an 1818 tho

not sure which you are talking about.

thats a poor choice then, puts off as much heat as hps for a given amount of light

there is literally a thread about these lights every few days they are garbage, as mentioned HPS and CMH are better

its a joke really

480 and 600W meanwells are fully dimmable

@Rahz used to have cases

alibaba

i would bet the lightbulbs at the big box stores are at least as good

yes i PM'd you about it

lots of diy options of cobs or boards or strips if you want a plug and play light the timber i mentioned earlier, or theres that site that sells preassembled QB rigs (growerssupply or something like that) PLC also an option but youre getting up there in wattage

no cob will not run at 28.6 V you need to pick a target current, look up the voltage from the datasheet (1212s are jsut over 36V at 1.4A) then if you want to run 4 cobs you need 36X4 if you want to run 5 cobs you need 36X5 you have a little leeway but not much for example 36X4 = 144V. if...

id take a bunch of cuts and put them right into flower as soon as they root

the t5 or strips are really the best option with that height a single QB would need at least 12-18" to uniformly illuminate a 2x2

not a bad rec. they are cheap and will work well in that space.

depend on how you run it on a 133 mm heatsink passive good to 75W fan needed for 75-150w (i have them, just ask)

not exactly but they do have cob mounted which is the more challenging part

i hope not read some of the more meaningful threads here (and ask questions) hard to go wrong with threads started by any of the following @stardustsailor @Greengenes707 @Abiqua @alesh @Stephenj37826 @robincnn @PSUAGRO. @The Dawg

me neither dont use who i am into consideration when you take anything i post to heart im just another guy (one of many here) who understands the fundamentals. from there we can build specific knowledge that is useful. Without an understanding of the fundamentals, its difficult to participate...

"played out"? they were never very good to begin with you get what you pay for (or less) id buy 10 LED bulbs from home depot for $50 before that