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If you are dead set on giving this a go, I would use a vertical version of what @SomeGuy recently finished his horizontal with. He used vinyl fence posts and mounted cobs on heatsinks that were sunk into the post. Air can be pushed into the bottom and/or sucked out the top of each post so that...

I do not believe that it is cost effective at this time to replace HID with LED in a vert cylinder. One of the major pluses of LED is the directional light. Over a flat canopy, no reason for a 360 bulb. But very different in a vert. You would have to build a multi sided fixture with serious...

Careful, that is a much smaller sink. It is rated up to 40W, which includes the optional fan. It is rated much lower as a passive device. It may be just fine for the V10 depending upon drive current Abiqua will use obviously, but not that beefy.

Seems there are new large passive heatsinks at this page. Reasonable prices, not sure about shipping. Not ready to place an order yet. http://www.led-heatsink.com/ModuLED_Modular_Passive_LED_Cooler.phtml?tag=CATE1276&offset=8

If we know the optimum photon density at the canopy and can measure the output of the chips, we should be able to determine the optimum distance from the canopy for a given chip at a given power level. Adding a reflector to the system would change the output pattern and likely raise the chip...

There is nothing wrong with going active, not saying you made a mistake, your solution works absolutely fine and I think you are very much on the right track with your "drone." There are many valid reasons to choose an active solution. I have this thing, as simple as possible, can't help...

If you wish to run the 3070 @ 1a, you could most likely, though I have yet to hear anyone who has, run that passively on this $13 sink, @ 1.4 lbs each. Using your number at 18 chips that brings the cost to $240 and the weight down to 25.2 lbs. If you wish to drive harder, this $27 heatsink...

Why would you use a different number of chips to make an active unit vs a passive unit? His example was 3070 chips at 1a. There are a number of choices for passive sink at that level. So why would you change the number of chips?

We have all kinds of threads on spectrum, cooling and bins, but seems no one has been talking about one of the biggest issues in lighting. The Inverse Square Law(ISL). All radiant source output follows the ISL. including the Sun. Except that from the Sun, the top of your plant isn't very much...

Well, why not? The number of chips required being equal, what makes active more suited to larger areas? In fact, I might argue the opposite. 3070 3kAB @ 1a is really not putting out much heat at all. I have cut one of the large passive sinks that I linked above in half and it is currently...

Lots of good info here, can't believe that I missed it til now. Been a fan of passive cooling as well. Thought I would turn you guys onto the heatsink that I have been fooling with as no one else has mentioned it here yet...

Abiqua is right on, that will provide. However, if funding is really that tight, you can get very solid performance from 4 x Vero 18s with Fastech 50W drivers at a significant cost savings over the 3070s and larger drivers. If they seem to be coming up short add two more when funds allow. The...

Supra, don't bother, just feeding a troll.

If you are really looking to bulk up, use heavier weights and fewer reps. High rep counts with low weights will help to rip up what you currently have one your frame. But to build bulk, step up the weight and go for fewer reps and do not forget the negative motion. There is much to be gained...

Bridgelux Vero 18 + Fasttech 50W 1.3a driver + large heat sink = best bang for the buck

Any info on this? Have not heard it before.

Just mentioned this in another thread in the hydro section. Google the Kratky method. Seems it is perfectly possible to grow in buckets with no airstones or circulation at all. Yields are down and I assume water quality would need to be monitored more closely, but there are vids of peppers...

I have used DWC systems before and thought the airstone to be indispensable. Then last night I came across the "Kratky Method". Which is simply DWC stagnant. Have seen videos of peppers and tomatoes grown to maturity in buckets of stagnant water. Side by side, the bubbler grew bigger plants...

Make no mistake, your light will perform very well. You will not likely notice much if any difference. My point was more that since we still do not have a real answer as to what the perfect spectrum is, there is little to be gained from mixing and with the various color temps available, it is...

I am sorry, but as far as I know there is no way to be certain. I have some Z2 bin 3000K 3070s that look exactly like that. Same smooth circle, same labels in opposite corners. They very well may be, but I could not say for certain.