Lighting Cob options

[thetreeman]

Ive been thinking about this a bit and your best bang/buck would probably to get two of these drivers HLG-185H-C1050 and run 3 of these cobs off each one, CLU048-1812C4-303H5K2. You would leave 34v on the table that you could potentially use to run another 36v cob either now or down the road. You can get 2 of the 185's for almost the same price as a 320 and that would give you some redundancy in case a supply failed, youd still have some light... You could spend an extra $40 and get 1818 cobs and get a bit better efficiency, depending on your budget. I like the citizen cobs better than cree right now, even if they were the same price, but because they arent, it makes the deal even sweeter. If you really want to go with less cobs, like 4 total, Id do this
Prices are from CDI
4 CLU048-1818C4-303H5K2 @ 22.60 each = $90.4
1 HLG-320H-C1400 @ $93.20
4 MODULED MEGA 134100-B @ $19.63 = $78.52
4 ideal holder 50-2204CT@ $8
Total = $ 270ish USD
Nice thing about this is you can hang each cob/heatsink individually so they would be adjustable depending on the plant size nearest them. You can spend a little more and get better efficiency by going up to the clu058 series citizen cobs, which would work with the same heatsinks, just need different holders.

 

[stonehead]

Thanks so much for the help guys I'm going to have abit of a read tonight.
Don't get me wrong I can grow big plants but can't get the penetration with the hps so I end up lollipopping and loseing half the plant.

 

[stonehead]

No 50w would do much better than the 75w hs1

Are you saying that 4 x 50w cobs would do better or wouldn't do better?

 

[BigSm0]

Thanks so much for the help guys I'm going to have abit of a read tonight.
Don't get me wrong I can grow big plants but can't get the penetration with the hps so I end up lollipopping and loseing half the plant.

I like the last suggestion on the 1812 cob and a 1050 driver. That's exactly what I run in the autocobs. I'd start with 6 cobs in total 300w and you will be very happy with the results. If you want to increase to 8 you would be doing much better than the hps. As you said lots to learn and understand.

Check this thread out. I'm not growing for yield as much as a simple low operating cost grow people can compare their space to. 4x4 seems to be the most common, in doing it with 220watts and I'm very impressed so far. https://www.autoflower.org/threads/autocob-grow-with-big-sm0-and-mephisto.57154/

 

[BigSm0]

Are you saying that 4 x 50w cobs would do better or wouldn't do better?

Cobs would do better. Depending on cob choice. The 1812 cob driven with 1050 amp driver is close to 50% efficient.

 

[stonehead]

Just read that tread, wow need to look into auto cobs, do they have separate drivers per light? I like that idea.

Got my pen and paper ready to do a price list of parts but now auto cobs! Are they available in the uk?

 

[stonehead]

I'm going to price up the 1050 driver with the 1812 cobs, 3 moduled mega heat sinks and some holders, il do one set of 3 and see how I'm set for another 3 after that.

Thanks for all this help I'm sure il ask for more but apprieciate it

 

[stonehead]

Is the part number specific for the cobs as I can't find the 303 H5k2 online but others are available

 

[A-Train]

Watch the growmau5 videos... everything being said will be much simpler then...

Yes do the 3 and 3 idea. 6 cobs in there will rock it. You will see .. i dont give a shit what any chart or calculator says. Ask @BigSm0 or anyone else running cobs... its just different. It is hard to explain but its just different. You plants just love the light. They eat it up and bathe in it and grow. Plain and simple

 

[BigSm0]

140w LED panel

A single 36w cob

Now this is not scaled. If the 36w cob was 140watts like the LED it would be off the charts. @A-Train yiur absolutely right. This is real. The above cob is not only putting out as much light it's actually a better light. You'll notice the red and blue leds are being phased out and white is taking over. Back to the original apache tech testing for NASA.