Hps vs New L.E.D.s

Olive Drab Green

Olive Drab Green

Well-Known Member
nxsov180db said:
Yes I drive 16x Citizen CLU048 1212 for every 2x meanwell 320's built into one grow light and I have 6 of them. Your running your cob's at over 70 watts each and mine are around 40, My COB's at 40 watts each are around 55% efficient I can't imagine that your CXB3590 would be more efficient than that driven at over 70 watts? I cover 16 sq/ft with 700 watts @1050PPFD, My question is how many square feet are you covering 850PPFD@267 watts with?
Click to expand...
Like, just 2x2 for one unit. Two sufficiently cover my 2x4-2x5 closet. Even my cactus are enjoying the lesser indirect side lighting. Pretty interested in the lower amperage bringing higher PPFD. Is your emitter higher voltage? How does that work?
 
Olive Drab Green

Olive Drab Green

Well-Known Member
nxsov180db said:
So is that 2x2 for one CXB3590@2150ma? or is that 2x2 for the 3 of the CXB3590's @267? They are 36 volt emitters just like your cree. The lower amp only put's out that much PPFD because there is 16 of them/1 for every sq/ft. If I tried to run one of them at the amperage you are running I would see a lot less efficiency, If I ran 32 of them instead of 16 I could probably get that same 1050 PPFD with only 550-600 watts in the same 4x4-16 sq/ft
Click to expand...
One. Regarding my efficiency, for my purposes, I'm not really concerned about 178 watts. I only use two, by the way. If anything, I might just need one more. To completely eliminate any shade, but for the two plants I have going now, this is still fine and in the optimum range.
 
Olive Drab Green

Olive Drab Green

Well-Known Member
nxsov180db said:
According to the PAR Watt's PPFD conversion you need around 75 par watts to have 850 PPFD/4sq ft. Your 1x CXB3590 @ 2150ma would have to be around 100% efficient to throw down 850PPFD over 4sq. ft, unless I'm missing something?
Click to expand...
All I can say is, @Rahz tests his photon flux with a proper PAR spectrometer. He gets the specs before he markets all of his fixtures, and I trust his measurements. One of my lights does, in fact, put out 850-900 PPFD.
 
Rahz

Rahz

Well-Known Member
Olive Drab Green said:
All I can say is, @Rahz tests his photon flux with a proper PAR spectrometer. He gets the specs before he markets all of his fixtures, and I trust his measurements. One of my lights does, in fact, put out 850-900 PPFD.
Click to expand...
:)

The PPF of a T1-2100 is about 170. The PPFD in the recommended footprint (18"x18") was/is 820. The T2 has always been the 2x2 flowering option but the T1 is capable of doing a nice job flowering a plant.
 
Afgan King

Afgan King

Well-Known Member
TheChemist77 said:
Just wondering what the best gram per watt average is for those of you using LED?? under hps,mh, or both ive heard claims of 1.5 gpw,never seen it personally, my best was with 1 600watt hps and 1 600 watt mh over a 4x6ft table and i hit just short of 1.3 gpw... with the ceramics first run using 2 315watt over the 4x6ft table so 630watt total and got 800 grams dry weight 1.4 gpw..each run after its gone up,, i wonder if 2 gpw is possible with ceramics? is 2 gpw acheivable with hps,mh or both? if so were is the proof? those of u running LED please tell us ur best gpw..i assume that 2 gpw is achievable with LED, but who has actually reached the 2gpw mark? and is there any proof,,not just claims???
Click to expand...
Hit 2g a watt regularly shit partner just hit 2.4 a light got a lil over 34lbs off of 14 gavitas
 
Olive Drab Green

Olive Drab Green

Well-Known Member
Rahz said:
:)

The PPF of a T1-2100 is about 170. The PPFD in the recommended footprint (18"x18") was/is 820. The T2 has always been the 2x2 flowering option but the T1 is capable of doing a nice job flowering a plant.
Click to expand...
Guaranteed, I only need two T1s for this closet, in any case. I may get one of your new T1-V196 fixtures just to round it all out at some point. Just to round out any shade. Trying to work that in.
 
Olive Drab Green

Olive Drab Green

Well-Known Member
nxsov180db said:
So the T1 has a PPFD of 820 over a 18"x18" canopy which makes sense, according to the formula that would make the T1 around 53% efficient. That same light covering a 24"x24" area would make that PPFD approximately 460, not 850.
Click to expand...
I have two, not spread to wide, but they overlap and I have one plant under each. Definitely not using 460. My LED panels produced about 420. This is an exponentially vast improvement. I have the amount of light I need easily for two closet-large plants. Their response is pretty incredible.
 
TheChemist77

TheChemist77

Well-Known Member
Afgan King said:
Hit 2g a watt regularly shit partner just hit 2.4 a light got a lil over 34lbs off of 14 gavitas
Click to expand...
ok thats gavita,s,, big op u got... i think the larger the area the greater the chances of hitting the high gpw's...
no LED answers?? i was expecting claims of 2.5 gpw or better,,lol
 
Banana444

Banana444

Well-Known Member
Afgan King said:
Hit 2g a watt regularly shit partner just hit 2.4 a light got a lil over 34lbs off of 14 gavitas
Click to expand...
34#=544oz=15504g. 14 1000w gavitas use over 1000 watts each...thats not 2.4g per watt and not real impresive. Even if they are 600w thats under 2g a w...plus how much ac are you running?
 
rob333

rob333

Well-Known Member
J. Killroy13 said:
I am sure this has been covered before but I set my room up with a 600w hps. I have been thinking about getting an led to cut down on electricity and heat. My main concern is plant production. So to the vetters out there who have tried both, what are my realistic expectations?
How to they really compare in plant productivity?
How much can I honestly save in electricity?
How much temp do they cut out?
Is there any drawbacks of using them that I am not thinking about?
I just have 4 babies in a little Nft system, any help will be appreciated.
Productivity is my main focus but don't care to invest the money for a better future.
Click to expand...
hps will win hands down and leds are good till one of the lights fail then u are up shit creak
 
Banana444

Banana444

Well-Known Member
a mongo frog said:
Naw, its super hard work to get those numbers. Fatigue sets in and its a motherfucker.
Click to expand...
I mean if thats one person, that processes all of that, thats impressive. I couldnt do that but i work more than a full time job. The argument was g/w not that growing 34#s wasnt impressive....kudos...and who cares how ya grow as long as you do. I tell ya if i had the room i would fire up all of my "old" digital ballasts.
 
rob333

rob333

Well-Known Member
Dankistino said:
Sounds like you've been involved in big league research projects
Click to expand...
maybe so i just no if my hps bulbs shits itself i will walk to my nearest hydro shop 1 2 and 3 i screw my bulb in and off i go if my led light shits a bulb it packing it back up and sending it back to the dealer to be replaced 4 weeks later what is flowering your plants ohhh let me guess you have more then one led light well i have my dick in my hand then dont i ??
 
rob333

rob333

Well-Known Member
Dankistino said:
Sounds like you've been involved in big league research projects
Click to expand...
anyway im not here saying that there are no good led light i no there are i have seen them but hey i am not spending near on 1300 dollers for a led light were i can fit out a hps or even a lec system or if i was gunna spends that much coin it would be plasma all the way plasma will walk all over led
 
D

Dankistino

Well-Known Member
Not sure about what goes on in ND. Not sure it matters.
Dutch silicon valley isn't really a thing.

Your physics/biology knowledge looks to be on PAR with your spelling.
 
You must log in or register to reply here.
Top