OLD MOTHER SATIVA
Well-Known Member
well maybe instead they can get you guys
on th' show..that might work
on th' show..that might work
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Mau5Capades: builds & grow journal
- Thread starter Growmau5
- Start date
ReeferDance
Well-Known Member
Take em' to church boys.
Tired of people getting burned by poor quality LED units.
Malocan
Well-Known Member
@Growmau5
Hello Sir,
first i wanted to say, that you are doing great work. i watch always ur videos on youtube
Thanks for sharing ur knowledge, im really thankfull for that.
But Sir, i have one question. I saw that video from you on youtube with the name:"mau5capades: Season 1 Finale : 1200w DIY LED harvest vs 1200
At 7.52min i can see how u calculate Gramm per Watt.
1773,93Gramm / 1179Watt = 1,51 gpw
Now i wonder if that is the right way to calculate gpw, this way of calculation doesnt say much. I mean u could finish ur harvest in 7 or 10 weeks, the time can make the gpw resut differnt.
i think it would be better to calculate like that way:
1179Watt / 1000 = 1,179 KW/H
1,179 KW/H * 12 (12 hours light per day in flower) = 14,148
14,148 * 63days (for example 9 weeks flower) = 891,324
1773,93Gramm / 891,324 = 1,990219044926424gpw (if the whole flower time would be 9 weeks)
= 1,791197140433782gpw (10weeks flower)
So your GPW result are even better or not? Or is they way how i calculate wrong :/ If yes please try to explain me if possible :/
I hope u understand my text:/, sorry for my bad english
Hello Sir,
first i wanted to say, that you are doing great work. i watch always ur videos on youtube
Thanks for sharing ur knowledge, im really thankfull for that.
But Sir, i have one question. I saw that video from you on youtube with the name:"mau5capades: Season 1 Finale : 1200w DIY LED harvest vs 1200
At 7.52min i can see how u calculate Gramm per Watt.
1773,93Gramm / 1179Watt = 1,51 gpw
Now i wonder if that is the right way to calculate gpw, this way of calculation doesnt say much. I mean u could finish ur harvest in 7 or 10 weeks, the time can make the gpw resut differnt.
i think it would be better to calculate like that way:
1179Watt / 1000 = 1,179 KW/H
1,179 KW/H * 12 (12 hours light per day in flower) = 14,148
14,148 * 63days (for example 9 weeks flower) = 891,324
1773,93Gramm / 891,324 = 1,990219044926424gpw (if the whole flower time would be 9 weeks)
= 1,791197140433782gpw (10weeks flower)
So your GPW result are even better or not? Or is they way how i calculate wrong :/ If yes please try to explain me if possible :/
I hope u understand my text:/, sorry for my bad english
Growmau5
Well-Known Member
yessir, i do understand your point. and we talk about that alot over here. GPW is really not the best metric to use for garden performance, but it is the easiest way to communicate to all growers about the efficacy of the grow. But you are right, grams per sqft, or grams per KWH, or a combination or those would be much better.@Growmau5
Hello Sir,
first i wanted to say, that you are doing great work. i watch always ur videos on youtube
Thanks for sharing ur knowledge, im really thankfull for that.
But Sir, i have one question. I saw that video from you on youtube with the name:"mau5capades: Season 1 Finale : 1200w DIY LED harvest vs 1200
At 7.52min i can see how u calculate Gramm per Watt.
1773,93Gramm / 1179Watt = 1,51 gpw
Now i wonder if that is the right way to calculate gpw, this way of calculation doesnt say much. I mean u could finish ur harvest in 7 or 10 weeks, the time can make the gpw resut differnt.
i think it would be better to calculate like that way:
1179Watt / 1000 = 1,179 KW/H
1,179 KW/H * 12 (12 hours light per day in flower) = 14,148
14,148 * 63days (for example 9 weeks flower) = 891,324
1773,93Gramm / 891,324 = 1,990219044926424gpw (if the whole flower time would be 9 weeks)
= 1,791197140433782gpw (10weeks flower)
So your GPW result are even better or not? Or is they way how i calculate wrong :/ If yes please try to explain me if possible :/
I hope u understand my text:/, sorry for my bad english
Ill work on some better metrics in a future video. I am taking notes at the moment...
rough draft.
Malocan
Well-Known Member
wohoooo nice Sir,
really transparent work Sir, keep going this great work.
Good luck and much succes in future
BuddyColas
Well-Known Member
Thanks for sharing your knowledge in your videos. Love the “chalk and talk”…well…actually white board and talk these days.
Great results showing a low-power high-efficiency COB panel can really perform.
I think I am finally getting it, and here are a couple of take-aways I get from your data. My job is to build the most efficient photon generator (cob panel) I can afford. Build it for the most uniform 13 to 17 PAR watts per square foot of floor space (I’m shooting for 1 emitter per square foot to do that). And if I come away with about 1.5 oz per square foot of floor space, then I’m doing pretty good. Good markers to shoot for.
Thanks again for sharing your knowledge and experience. You’re helping a lot of us DIY gardeners!
Growmau5
Well-Known Member
Thats right Buddy. Im starting out trying to show some higher efficiency setups, but ill do more videos discussing some higher dissipation setups like Vero29s on the new hlg240s.
All I am really doing is repackaging all of the amazing info here on RIU, into video format. So the real thanks goes to all the pioneers here that do the testing, posting, & spreadsheets.
Shredderthirty
Well-Known Member
so you got 1774 grams from that 700mA CXB grow. sorry i didn't see the vid yet and don't wanna use up my data 
anybody have any advice or info for a good closed column extractor? was looking at a couple (extraction experts, best value vac) only two i really found
anybody have any advice or info for a good closed column extractor? was looking at a couple (extraction experts, best value vac) only two i really found
bassman999
Well-Known Member
I am trying to optimize my 2x4 tent.'Currently have (6) CXA3070 3000K AB on a 8"x29" HS
Running single HLG-240H-42B, second one coming today.
Should I scrap this hs and go a different route? I was planning on adding more cobs, maybe mixing in some CXB3003500 or 4000k
I am using the 42b so that as I add cobs I can keep same drivers, with my budget limitation all at once isnt gonna happen.I gotta
I wish I woulda got the cxb is the first place, but use what I got.
My layout right now is 2 cobs on each end and 2 in middle.
Running single HLG-240H-42B, second one coming today.
Should I scrap this hs and go a different route? I was planning on adding more cobs, maybe mixing in some CXB3003500 or 4000k
I am using the 42b so that as I add cobs I can keep same drivers, with my budget limitation all at once isnt gonna happen.I gotta
I wish I woulda got the cxb is the first place, but use what I got.
My layout right now is 2 cobs on each end and 2 in middle.
Growmau5
Well-Known Member
OK, so you have the (6) running in parallel @ 953ma. which is ok because you didnt know any better when you started. But may I ask, why order another of the same driver? Even though that is a great driver with constant voltage/constant current adj, you will get slightly different brightness from each cob w/o a current limiting resistor or some kind of current mirror.
My advise, keep the original setup you have and add an HLG185h-c1400 with (4) cxb3070 4k, or cxb3590 5k.
bassman999
Well-Known Member
I already have the 2nd driver.
Wired 3 cobs each and have each dialed to 160 watts.
I guess I need to learn about the current mirror.
bassman999
Well-Known Member
Did you mean on a separate hs, or on the same one between the CXAs?
Growmau5
Well-Known Member
@bassman999 Lets look at your heatsink: 8.46" x 29" this profile has 396.8 cm2 of surface area per inch or 11507cm2 divide that by 40cm2/w for active or 110cm2/w for passive cool.
Your heatsink can handle 288 heat watts active, or 105w passive. cxa3070@ 1000ma are what? about 48-52% efficient. IDK.
Roughly speaking, your heatsink can handle around dissipation 500w of cxa3070@50%eff.
Your heatsink can handle 288 heat watts active, or 105w passive. cxa3070@ 1000ma are what? about 48-52% efficient. IDK.
Roughly speaking, your heatsink can handle around dissipation 500w of cxa3070@50%eff.
bassman999
Well-Known Member
Thank you never could get that formula to work right, but my heatsink isnt fro HSUAS, but VERY similar, but exactly 8" wide
Is that profle gonna gve good enough light spread in 23"x48" tent?
Ill ad more cobs in the middle...CXB ones this time
I could run the cxa on one driver and cxb on other driver, run the cxa lower to try to increase efficiency.
Ill put cxb's on perimeter, and cxas in middle to reduce center hotpot
over the next year Ill slowly buy CXB cobs as budget allows.
That is if the heatsink without lenses or reflector will be a good enough light spread.
I am running http://www.mouser.com/ProductDetail/ebm-papst/6224N/?qs=MQ89PJz411cqfcPgVCaroQ==
for a fan so nice cooling
Growmau5
Well-Known Member
@bassman999 Im a visual type of guy, so here is a scale drawing of what your setup will look like. Its a tad weak in the far corners, but you should have plenty of light to raise it off the canopy enough to get a nice spread all the way to the corners. And since you are in a tent, you can run your light a little higher without worrying about photon loss to walkways and such.
overall, I think it will perform quite nicely.
overall, I think it will perform quite nicely.
Growmau5
Well-Known Member
good point, that is a valid concern. I would be willing to take the risk @ only 953ma to max the spread. But i guess Bassman will have to decide if he is comfortable with it.
mc130p
Well-Known Member
yeah that's true. the current is pretty low, especially if they are 36V version...not sure what he has. probably not a noticeable issue....
bassman999
Well-Known Member
In this design are the cxas are on one driver and cxbs other driver?
my cxas actually only pull 35.6v at 950 ma when measured with my Fluke at least
The HS is actually only 8" if that makes a difference
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