Dig led help please!!!

Rahz

Rahz

Well-Known Member
Probably not what I would do working with that height, but if you're set on 1.4 amps maybe go with Vero 29.

After thinking about it I would probably end up building something with more than 6 emitters. Either 14 Vero 18 or 11 CXB 1816. Either of those groups would fit on a hlg-120h-c350. Stick them on a 24" slab of the 12" profile at heatsinkusa.
 
TheDabWiz

TheDabWiz

Well-Known Member
Rahz said:
Probably not what I would do working with that height, but if you're set on 1.4 amps maybe go with Vero 29.

After thinking about it I would probably end up building something with more than 6 emitters. Either 14 Vero 18 or 11 CXB 1816. Either of those groups would fit on a hlg-120h-c350. Stick them on a 24" slab of the 12" profile at heatsinkusa.
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Vero easier too come by or no? I would love too run 14 of them at almost the length of my tent. And how many fans and the hlg-120h-c350 run all 14 no problem?
 
nvhak49

nvhak49

Well-Known Member
Rahz said:
Probably not what I would do working with that height, but if you're set on 1.4 amps maybe go with Vero 29.

After thinking about it I would probably end up building something with more than 6 emitters. Either 14 Vero 18 or 11 CXB 1816. Either of those groups would fit on a hlg-120h-c350. Stick them on a 24" slab of the 12" profile at heatsinkusa.
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Do you think 4 vero 29 V2 run on the hlg-120h-c700 would be enough for my plastic cabinet that's 36"h x 25"w x 16"d or would I have to run them harder or would it be better to get 6 of them, thinking vero 29 since they're cheaper for my small personal grow. My main grow will have Cree cxb's in it currently running old school 1k hps haha but I'm loving my vero 18 veg lights and my 200w cxa 3070 flower panel, cob kicks booty lol. Thanks for the help still a noob when It comes to trying to figure out how big/small of a panel for the grow area I have.
 
Rahz

Rahz

Well-Known Member
I suggested the 12" heatsink profile cause you could do something like this with the Vero 18s. Same thing with the CXB 1816 minus 3 emitters.

Apparently 4000K CXBs are hard to find. Both Vero 18 and CXB 1816 are available at digikey in 4000K though.

2 fans with a shroud on top if you can get creative or do some basic metal work. Probably 4 fans if they're placed directly on the sink.

The HLG120h-c350 would run 14 V18s or 11 CXB 1816. Gimme a couple minutes and I'll tell you which one would be brighter.

Image2.jpg
 
TheDabWiz

TheDabWiz

Well-Known Member
Rahz said:
I suggested the 12" heatsink profile cause you could do something like this with the Vero 18s. Same thing with the CXB 1816 minus 3 emitters.

Apparently 4000K CXBs are hard to find. Both Vero 18 and CXB 1816 are available at digikey in 4000K though.

2 fans with a shroud on top if you can get creative or do some basic metal work. Probably 4 fans if they're placed directly on the sink.

The HLG120h-c350 would run 14 V18s or 11 CXB 1816. Gimme a couple minutes and I'll tell you which one would be brighter.

View attachment 3460739
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You my friend are the best.....lemme know what setup would be brighter n more efficient for getting my buds filled out too the max.....with only doing a one plant scrog in that small tent i gotta be able tok pull as much weight as possible out of i too make it worth doing. Thanks evertone you guys have been great help.....id still be so confused right now lol
 
Rahz

Rahz

Well-Known Member
Well, the cost would be almost the same. The efficiency is very similar, and 14 V18s at .35amps is almost the same wattage as 11 CXB 1816s at .35 amps. There would basically be no difference, though at 4000K I do prefer the spectral curve of the Vero. Plus you would save a few bucks since mounting hardware would be just the screws.

Either of those setups would provide about 850-860 PPFD which is excellent.
 
TheDabWiz

TheDabWiz

Well-Known Member
Rahz said:
Well, the cost would be almost the same. The efficiency is very similar, and 14 V18s at .35amps is almost the same wattage as 11 CXB 1816s at .35 amps. There would basically be no difference, though at 4000K I do prefer the spectral curve of the Vero. Plus you would save a few bucks since mounting hardware would be just the screws.

Either of those setups would provide about 850-860 PPFD which is excellent.
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Thanks you very much....I'm gunna go with the vero 18s since all I need is screws for mounting them......digikey has them in stock? And any reputable place too buy the hlg-120h-c350? And also where too buy mounting screws.....I'll order the heat sink slab from heatsinksusa n go with the 12 inch profile but how thick should it be or any recommendation on what one u would use from them? Thanks again!
 
Rahz

Rahz

Well-Known Member
nvhak49 said:
Do you think 4 vero 29 V2 run on the hlg-120h-c700 would be enough for my plastic cabinet that's 36"h x 25"w x 16"d or would I have to run them harder or would it be better to get 6 of them, thinking vero 29 since they're cheaper for my small personal grow. My main grow will have Cree cxb's in it currently running old school 1k hps haha but I'm loving my vero 18 veg lights and my 200w cxa 3070 flower panel, cob kicks booty lol. Thanks for the help still a noob when It comes to trying to figure out how big/small of a panel for the grow area I have.
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That would work well for a 25"x16" footprint. I'm coming up with PPFD of about 800.
 
Rahz

Rahz

Well-Known Member
TheDabWiz said:
Thanks you very much....I'm gunna go with the vero 18s since all I need is screws for mounting them......digikey has them in stock? And any reputable place too buy the hlg-120h-c350? And also where too buy mounting screws.....I'll order the heat sink slab from heatsinksusa n go with the 12 inch profile but how thick should it be or any recommendation on what one u would use from them? Thanks again!
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The 12" profile has a .3 inch baseplate, I would get a 24" length since that would give equal spacing on all sides.

I've used powergatellc and bravo electronics to have drivers shipped. Digikey should have some V18s at 4000K available. The screws are 2m or 2.5m I don't remember. You should find the vero 18 datasheet at bridgelux's website and check the specs. You will need a hand tap and die set. You can drill the holes by hand if you're very steady but I would recommend a drill press. You can buy molex connectors for the Veros if you don't want to solder.
 
Rahz

Rahz

Well-Known Member
TheDabWiz said:
800 ppfd is enough for a 25"x16" scrog basicly? And I'm trying too find those vero 18s on digikey
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Yes, 800 PPFD is the photon density for 25"x16" and is very respectable. I think both of my lamps are in the 700s.
 
TheDabWiz

TheDabWiz

Well-Known Member
Rahz said:
Those are the right ones.
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Thank you very much....I'm gunna do my same basic design and get a sheet of aluminum cut too the size of that heat sink n mount the veros too the heat sink n cut holes in the aluminum plate where the LEDs will shine threw and sandwhich everything in the middle n put 4 fans on the top of the heat sink....just gotta find decent fans for a good price and a power supply too power them all with one cord.....unless I can wire the fans too the same power wire that will be running from the led driver. Idk yet
 
TheDabWiz

TheDabWiz

Well-Known Member
Can someone help me with the positioning of the LEDs on a 24"x12" heat sink too get the max footprint I can with the 14 vero 18s
 
Rahz

Rahz

Well-Known Member
Yes, about 140 watts. Probably 170 with fans and PS loss.

I'm not sure what you're saying about the metal sheet with holes for the emitters. The emitters will be mounted to the heatsink so you shouldn't need additional metal unless you have something cool planned I can't think of.

The quick and dirty diagram I posted earlier shows some of the measurements on your 12x24" heatsink. Leave a 2" margin all around, that would leave the rows 4 inches apart and the emitters in each row 5 inches apart.

Digikey has fans. I've actually only made 1 fan cooled lamp, but it has an enclosure so haven't made the style you're looking at, though several board members have. Maybe they could give some info on the best CFM or maybe model numbers. Just an off hand guess, maybe use 40-50 CFM 120mm 12v fans, 2 each on APV-12-12 (you can buy those at the same place you get your HLG. In an open design I don't think the pressure rating on the fans will be crucial so you can probably find some really quiet fans in that CFM range. Would be nice if someone else would chime in though.
 
TheDabWiz

TheDabWiz

Well-Known Member
Rahz said:
Yes, about 140 watts. Probably 170 with fans and PS loss.

I'm not sure what you're saying about the metal sheet with holes for the emitters. The emitters will be mounted to the heatsink so you shouldn't need additional metal unless you have something cool planned I can't think of.

The quick and dirty diagram I posted earlier shows some of the measurements on your 12x24" heatsink. Leave a 2" margin all around, that would leave the rows 4 inches apart and the emitters in each row 5 inches apart.

Digikey has fans. I've actually only made 1 fan cooled lamp, but it has an enclosure so haven't made the style you're looking at, though several board members have. Maybe they could give some info on the best CFM or maybe model numbers. Just an off hand guess, maybe use 40-50 CFM 120mm 12v fans, 2 each on APV-12-12 (you can buy those at the same place you get your HLG. In an open design I don't think the pressure rating on the fans will be crucial so you can probably find some really quiet fans in that CFM range. Would be nice if someone else would chime in though.
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Thanks you have been more than helpful. Now I'll I need is fans then.....so just mpount the LEDs too the heat sink put fans on the other side and just hang it like that? Like you said it would be a open one so the fans wouldn't have too be super powerful
 
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