Big Green Thumb
Well-Known Member
Nf, a question for you about your light setup, if I may: Are you running these 4000k strips for flowering or just veg? If flowering, are you planning to supplement some red?
bakedPotatoe
Active Member
I can be named a horse and you can flog me if you want
nfhiggs
Well-Known Member
I've got them over a flowering plant right now, replacing a Galaxy Hydro light.. She is about 5 weeks in I think. Nothing else on her.
nfhiggs
Well-Known Member
Yeah, when I first turned them on after putting them in the cabinet, they were at 1.4 amps and they hot a little hotter than I like, so I turned them down to 1 amp,.
MrTwist1
Well-Known Member
Yep 1A seems to be the sweet spot for these strips.
canadian1969
Well-Known Member
Have you a light meter of some sort? par, lumen, lux (maybe your phone) just curious, love this build.
nfhiggs
Well-Known Member
Yeah, I wish. A cheap light meter is on my "to buy" list.... (wish I could afford a PAR meter or spectrometer)
nfhiggs
Well-Known Member
BTW, I found out all but one of the voltage/current displays I have are WAAAAY off (like double the actual amperage). They are actually running at a little over 500 mA each, according to my multimeter. I'm gonna have to go back and find the seller I got the first display from, cuz its dead on...
canadian1969
Well-Known Member
If you have a smart phone then you likely have a basic LUX meter. I have a handheld lux meter (cheapo ebay) and an App on my phone and honestly I think the phone is more accurate. not a PAR meter or spectrometer , but hey, use what you got right.
I would love to be able to afford one of those Sekonic C-7000's or something similar, spectral colour graph and ppfd.
nfhiggs
Well-Known Member
Yeah, I tried the phone thing, apparently mine won't work as a light meter.
nfhiggs
Well-Known Member
I'd just like to be able to get one of those Apogee quantum flux meters....
bakedPotatoe
Active Member
So each strip is 500mA ?
nfhiggs
Well-Known Member
yeah, that's what it looks like.
Big Green Thumb
Well-Known Member
Well, I just received my 30 strips. Time for me to get building a 720 watt 4'x4' light I suppose! Woot!
NF, how many watts are you pulling from the wall with yours?
NF, how many watts are you pulling from the wall with yours?
nfhiggs
Well-Known Member
Right now I'm at 150W to the lights, plus power supply losses - probably ~170W at the wall. Was gonna grab another set but they are currently sold out....
Big Green Thumb
Well-Known Member
What would be the best power supply (or multiple power supplies) to power 30 of these strips? I am used to constant current power supplies to power cobs, but not sure what one(s) to get. Theses strips are new technology to me.
The constant voltage (24V) power supplies I am looking at are only in the 85-89% efficiency range. Even the Meanwell power supplies. The constant current drivers I am used to using are all 93+% efficiency.
The constant voltage (24V) power supplies I am looking at are only in the 85-89% efficiency range. Even the Meanwell power supplies. The constant current drivers I am used to using are all 93+% efficiency.
nfhiggs
Well-Known Member
I'm not really up on all the different Meanwell models, but I'd look for a 200W 700 mA CC driver - that should go to at least 285V, and you can put ten strips in series on it. You would need three drivers for all thirty strips.
Randomblame
Well-Known Member
3x HLG-240H-C1050B,
dimmable 5-100%,
10 strips in series to each driver,
each strip gets 1050mA, so 24w per strip(vf per strip @1050mA: 22,8v)
~240w per driver,
~720w total,
94% eff. driver =~766w at the wall.
