Sorry yes 3590 i was ahead of myself. And im suggesting 5 to outperform a 600 hps. And being i have ran a 600 hps as well as cobs of the 3590 i can attest to the difference. 5 of them in a 4x4 will out perform a 600 imho
Lighting Cob options
- Thread starter stonehead
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Definitely surprising for me to hear! in a good way though as it would mean my lights too much 
...obviously im only new to this but from the calcs i just dont believe that it would outperform...i think even a HPS would give a PPFD of around 700-750 in a 4x4 space where as 5 CXB3590's @ 700mA would only give a PPFD of 200 in the same space...obviously im going by numbers on a calculator not real life experience...
...obviously im only new to this but from the calcs i just dont believe that it would outperform...i think even a HPS would give a PPFD of around 700-750 in a 4x4 space where as 5 CXB3590's @ 700mA would only give a PPFD of 200 in the same space...obviously im going by numbers on a calculator not real life experience...Your math is correct. Just growing under cobs compared to a hps the cobs give faster better growth hands down. And if you go off the scales and numbers and he has the cash then hell yeah throw 8 cobs in there. That will def be some top notch stuff. And huge plants.
For sure, as I said im going by numbers rather than real world experience...so i value your opinion more!
As hes in the UK i would probably suggest getting on ebay and buying some Citizen CLU048 1212's off there...i think its £45 for 5 of them, get some 3500k and a pack of 4000K and use 8 in total with 2 spares...then pair them with a HLG-185-C700 driver on heat sinks of his choice...would probably be fairly similar to the light i built but would be a fair sight cheaper....i actually have a spare HLG-185-C700A driver he could have for cheap but it might not suit his needs if he wants to run at 1050 or 1400mA...
As hes in the UK i would probably suggest getting on ebay and buying some Citizen CLU048 1212's off there...i think its £45 for 5 of them, get some 3500k and a pack of 4000K and use 8 in total with 2 spares...then pair them with a HLG-185-C700 driver on heat sinks of his choice...would probably be fairly similar to the light i built but would be a fair sight cheaper....i actually have a spare HLG-185-C700A driver he could have for cheap but it might not suit his needs if he wants to run at 1050 or 1400mA...
I think 126 watts would be a little low for the space as a 600hps comparison. I'm doing better with half as much wattage as I did with hps. Currently I'm growing with 1/3 that wattage with 4 singe autocobs and the plants are going crazy in a 4x4.
Site the cob calculators are off. This was discussed in depth in another forum.
I'll catch up more in a bit, I'm on the road
Site the cob calculators are off. This was discussed in depth in another forum.
I'll catch up more in a bit, I'm on the road
Id suggest clu048 1212's driven at either 1050 or 1400ma 90cri 3000k and HLG-320H-C1050b should be able to drive 9 of them or same driver at 1400 could do 6...
Wow this is getting confusing, a train you mad it sound so simple then lol.
5 would be good, 4 would be better, 8 would be doable but costly, what's the cheap driver you have what would that handle?
My aim as said is to replicate a hs1 over each plant with 4 in a 4x4. So would I need 2 at 50 watts each per plant to match the hs1 performance?
Thanks guys
5 would be good, 4 would be better, 8 would be doable but costly, what's the cheap driver you have what would that handle?
My aim as said is to replicate a hs1 over each plant with 4 in a 4x4. So would I need 2 at 50 watts each per plant to match the hs1 performance?
Thanks guys
Worry about the drivers last. First fit the cobs to the space. Op wants massive plants in a 4x4, it's not just the light but surely a big part of it. One thing you can do which I always do is hold off on the bloom nutrients as long as possible. Which is usually when the plants stop stretching. There is a great thread somewhere here "life of an auto" reading up on that and following it will increase your plant size trumendously.
As for cobs Cree is an excellent choice especially the 3590, to save some money the citizen 1818 beats the Cree, the 1812 just falls short. Doing the math over and over again I feel the 1812 is the best cob out there for the price.
As for cobs Cree is an excellent choice especially the 3590, to save some money the citizen 1818 beats the Cree, the 1812 just falls short. Doing the math over and over again I feel the 1812 is the best cob out there for the price.
No 50w would do much better than the 75w hs1
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