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Nice job, although 800w seems like a very high intensity in a 4x4, wondering if it has advantages over running the same power draw in a 5x5. My last run using 16x vero29's (v1.2) in a 5x5 800w power draw resulted in 1109gr dried buds. This was a completely different growing style though, had...

I will try that, didn't know. It seems to be accurate though, I can touch the sink with my lips without having the urge to take em off :grin:

Thanks for all those replies. If I measure the base of the heatsink (thick aluminium where the cob is attached) I measure the given temps. If I measure in the middle of the fins the temp is a little higher. I was just curious about ideal heatsink temp for cobs in our purpose. The whole light...

Ambient temp while measuring was 23 degrees.

Anyone? Temperature I am reading is 35 degrees of heatsink after 1 hour of operation. Driven at 1.7a with a lens covering the cob, fan I'm using is around 23cfm. I have tested it with a 30cfm fan, temperature was slightly lower at 33 degrees but the noise of that fan was too loud. Is 35...

Hello, I run a vero 29 at 1.7a on a test heatsink/fan combo. I am reading temps with a laser gun, but what is the most ideal heatsink temperature range for cobs? Thanks

Does someone know where this 'x3' lenses can be found?

Thanks for explaining! Well, then I need 16 wires instead of 4 :p

Why does each vero has different voltage? And arent the differences very very small between the cobs?

Maybe the wrong place to ask this question but since it was my own thread I'll just post it here :p Is it possible to wire 4 of the lpc-60-1400 drivers in parallel? When in parallel the voltage out remains the same but amperage will be 4x1.4a=5.6a. When I wire 4 vero 29 in parallel aswell, they...

Im in the Netherlands and parts for cobs arent that available. I ordered the vero's at digikey and had to pay 100€ tax, so I decided i just run 16 lpc-60-1400 which i could get in the EU. Made a nice driver board for it and will be hung outside the tent. I know there are a lot of wires now but...

Thanks! So with the 73degree ledil reflector I'll be fine, it doesn't have to be that perfect. Ledil is actually the only manufacturer who builds reflectors that fit in the bars, all others are large/strange dimensions.

Thanks for the advice, but I already have the drivers and everything else to build the light bars.

Hello, I am building 4 led bars with on each bar 4x vero 29 3000k driven at 1.4a. The bars are 120cm long to place each cob so that the light intensity is the same everywhere. This all wil be placed in a 5x5 tent. This would be 32w sq/f. Initially I didn't want to mount reflectors but after a...

I see everybody uses 3000k, but I see a lot of stretch. Compared with hps, is the stretch more or less? Im sorry if this is the wrong place to ask, didn't know where else.

If so many people want to share the order, I'll pass. Thought you'd still havent found anyone to share with, and I need more then 8. I'll buy a 20 pack myself. Thanks anyway! Altough nobody will know me, I've been reading on RIU for almost a year. Maybe I'll share some of my projects with you...

I'm interested, I live in the Netherlands. I couldn't find the pm function of this site, so maybe you can sent me a pm? Thanks

Thank you I do not agree. Temps like that maybe speed up growth, but in flowering stage it just has more disadvantages. All processes in the mj plant above 32 degrees speed up so fast, which is, even for (commercial) growers who arent doin things for the first time, not in your favor.

Why should you want to have your room at 32-34 degrees? Even though using co2, best is not to run at temps higher then 30 degrees. Light intensity is all that matters in relation to higher concentration co2, not temperature. Greetings from the Netherlands.