8 x clu048-1212 newbie

Hello,

I am new at growing indoor. I have been reading about leds and cobs for months. I finally decided to build a cob rig for my small tent. The size of the tent is 80cmx80cm or aprox 7 square feet. I am building an H shape rig with 4 cobs on each side. each set of 4 clu048-1212 powered by a hlg-185h-c1400.

I would like to know if it will be too much light. I plan on growing 6 autos in smart pots with soil.
Any advice or input will be much appreciated.

Yea 57 watts per square foot is a bit of overkill... Have you checked out quantum boards.. They are perfect for small grows..
There kind of a pain to get but they are worth it.. I have a 135 watt QB kit and it grows as well as my 3590s..
https://horticulturelightinggroup.com/collections/diy

Thank you, the problem is that I am in spain. The shipping and tax charges are a bit too high. I can't find any QB dealers in europe. I checked out that option. The nice thing about the clu048-1212 is the low cost. Maybe not as efficient as cree cobs but I am not growing a commercial space. Its basically for personal use. I am looking for a nice cheap option that will produce good weed.

Daniel08 said:

Thank you, the problem is that I am in spain. The shipping and tax charges are a bit too high. I can't find any QB dealers in europe. I checked out that option. The nice thing about the clu048-1212 is the low cost. Maybe not as efficient as cree cobs but I am not growing a commercial space. Its basically for personal use. I am looking for a nice cheap option that will produce good weed.

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you're on the right track buddy.

You'll have more than enough light to power your space, so I'd recommend buying 2 Meanwell HLG-240H-C1400B drivers (4 COBs each) Then you can wire them up for simultaneous dimming, so you can control how much light you're pumping out. As a plus, the lower the drive current the more efficient the LED is, so under-driving them will make your light a bit more efficient.

If you need any help with simultaneous dimming for those drivers let me know and I can let you know how I did mine.

ZeroTrousers said:

you're on the right track buddy.

You'll have more than enough light to power your space, so I'd recommend buying 2 Meanwell HLG-240H-C1400B drivers (4 COBs each) Then you can wire them up for simultaneous dimming, so you can control how much light you're pumping out. As a plus, the lower the drive current the more efficient the LED is, so under-driving them will make your light a bit more efficient.

If you need any help with simultaneous dimming for those drivers let me know and I can let you know how I did mine.

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Thank you, I was going to use 2 meanwell hlg-185h-c1400. one per 4 cobs. You think I should go for the 240h? From my calculations the 185h can handle 4 cobs at 1400mA.

I always upsize my equipment when I can, because it means I'm not driving everything at 100%, typically makes it last longer and more efficiently. Also, the cost of the drivers should not be very different.

Ah ok, good advice. Thank you.

Having dead space on your driver doesn't make it run more efficiently, it actually does the opposite.

ZeroTrousers said:

I always upsize my equipment when I can, because it means I'm not driving everything at 100%, typically makes it last longer and more efficiently. Also, the cost of the drivers should not be very different.

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meanwell185 is fine. only use the 240 if youre running 5 cobs

actually a 240h-c1400 with 5 cobs would fill that space great

you could even bump to 5 x 1216 at a nominal cost for a good performance bump

CobKits said:

meanwell185 is fine. only use the 240 if youre running 5 cobs

actually a 240h-c1400 with 5 cobs would fill that space great

you could even bump to 5 x 1216 at a nominal cost for a good performance bump

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Thank you, I received your email. I am new at this. your advice is appreciated. My concern is with an even light spread.

in that space 5 is fine

make a 50 cm square and put one cob in the middle

with lights 30 cm above canopy it will be nice uniform coverage

Daniel08 said:

Thank you, I received your email. I am new at this. your advice is appreciated. My concern is with an even light spread.

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Would 8 1212gen5 be better than 5 1216? Your price of 9 dollars a cob is great. Total of 395 watts

CobKits said:

in that space 5 is fine

make a 50 cm square and put one cob in the middle

with lights 30 cm above canopy it will be nice uniform coverage

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Could you give me a quote for the 5 cobs? I sent you an email.

on an efficiency status 8 1212 gen 5 is almost identical to 5 1216 gen 6

chip cost is the same for either.

you'll need 3 more heatsinks and holders in the 8 cob case (but can use smaller heatsinks like 105 or 120mm if you find them)

i dont do quotes all prices are on the site

Thank you for your help Cobkits. I will post my light setup and a journal of my grow when i start it.