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Liquid cooling is also a viable solution to pushing COBs hard. Might be something to consider. Also easier to get that heat out of your grow area and cut down on overall cooling costs.

I think the problem is its more of a novelty item at a price that most would only consider if the item were necessary. Also for that price I would expect a thermocouple that has accuracy better than +-2C, don't you think?

Ive never heard of an instance where any cannabis plant did worse under 24/7. You just get them to veg faster. They wont stretch as much in veg either. And unless heat is a major issue which it almost certainly isnt, no downside to running the driver and cobs 24/7.

The light fixture is bowing, not the tent. I think quictents is what youre looking for @Smoke-A-Cola

Wait until the HLG 480s come out if you want to use the C version imo. Will fit 5 perfectly for probably the best ~500 watt light out there.

Just so anyone considering following this build knows, you can swap out the D version veros for the B versions and use the 1050ma version of the same driver. Same cost, more efficient light and you can power it a little more to boot. No reason not to do this imo unless you have sourcing issues.

What kind of multipliers we talking? I'm using .015 to guesstimate my setup using a mix of 3500k cri80 and 3000k cri90 vero 29B SE chips. Regardless it should get me in the ballpark.

It has the same 62 watt wall draw as what now? Which cob fixture you referring to? Also, why would it be unfair to compare a mutlipoint light source to another multipoint light source. Also, 10k lux is not a lot of light...

I dont know what yours is, but I have a circulation pump in my small setup that moves 800GPH while only using 6watts.

Use an aquarium circulation pump and you won't have that problem.

Also remember that when the peltier shuts off, the cooling side will equalize temps with the hot side and effectively dump heat into your box.

Well it wasnt very well insulated but it was completely sealed. It was a small grow space (4 cubic feet) that I had planned to cool. Even with nothing else on (lights pumps etc) it failed to reduce temperatures in the box. Watch this video and tell me what conclusions you come to...

Well, I tried using one to cool down a volume of 4 cubic feet and it didnt do shit. Dont waste your time and money. If I had to guess, youll probably need over 600watts of terribly inefficient peltiers to achieve your goals... Youd be further ahead tapping into your existing cooling...

How big of an array of peltiers do you think youll need to cool down 27 cubic feet by 10 to 15degrees? Because a single ~60w peltier chip will do literally nothing...

This is a pipe dream, go back to the design board. I dont think peltiers will be an effective solution.

Its about using the proper tool for the job, watercooling isnt always the proper tool. And tty does reclaim the heat in his system. I wouldnt ask him any in depth questions about his system though, in my experience, gleaning useful information about his setup out of him is about as easy as...

This is great, but you should still read up more on the driver it recommends just to be sure. But very nice work.

Were saying by the time you put those led light bulbs in there you will have practically no room for plants. Its the bulbs taking up 2-3 inches of space vs about a half inch or so with an LED panel. But I can tell you have no clue about LEDs judging by your comment of putting ~200 individual...

Next question, does it cost an arm? A leg? Both?

So these are limited edition COBs? Sweeeeeet. Do they have gold leafing around the holder at least?