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correct.

In my 4x2 I run 2 72v cobs for veg on a 1400ma driver usually dimmed a bit. My flower setup is 460ish watts max.

Taller tent is always the winner in my mind. While you might not need a bigger footprint, the height is always useful.

That light can be built for a lot less money but I agree it would work well in a 4x2. I would put fans on the heatsinks because they will be running pretty hot at 100w. Or grab 4 of these when they come back in stock...

Did you ever build a light? This is the light I use in my 4x2. 6 cobs and a quantum board. Pretty fucking sweet. For veg I swap out the 2 cobs to the outside of the qb for 2 72v 4000k cobs and just use 2 of them with the other lights turned off.

It will indeed cause a little more stretching but it's a compromise. 3500k is the best solution for a grower who only wants one set of lights for both veg and flower. I have a separate veg setup that's about 1/3 the power of my flower setup. I do 4000k for veg and 3000k for flower.

I have a couple of those "600w" meizhi and they did a very good job for me. You may want to upgrade at some point but i tell you that you may not be as disappointed as you think you will be.

Why would you wanna do this again? Too much heat?

I think you got some killer ideas I just don't wanna see you spend more than you have to. I am of opinion that you should do 9 cobs running at 75ish watts each. Put the outside cobs 8" from the 4x4 edge and space the rest 16" on center. That would have each cob covering 8" in every direction...

logic I suppose is the reason I want them evenly spaced. Saturating certain parts and leaving other parts wanting is just plain silly.

If you can't figure out why you need 3x3 4x4 or 5x5 to be spaced equally I'm not sure what else I can do to help you. I mean seriously 3x5, 3 across somehow covers the same area as 5 do in the other direction? If you are covering an area that is 3'x5' then you could cover evenly but how the...

They can't be..... You have 3 rows of 5 lol how can that be evenly spaced? 4 rows of 4 or 3 rows of 3 would be evenly spaced but you can not evenly space 3 rows of 5.

What i mean is why are the spacings between the cobs not equal?

15 cobs doesnt even work out into even rows.... 9 or 16 would give you even rows. I guess i am not really understanding the whole optic thing but maybe you can explain your thought process.

Mostly wondering what's up with the lenses and why 15 per plant? Like the poster above said if you are going vero drive them harder and if you wanna run 15 for some crazy reason run citi or the luminus Cobs. So long as you pay no mind to the tards at grasscity you should be ok. I would do 9...

I think your cooling needs could be more than you think... in your previous design you were removing some of the heat with the fan loop but here 100% of the heat stays in the room. Also I think that build needs a LOT of tweaking.

what a dick bag....

Looking more and reading what Johnny Lawrence posted i think i would switch up what i posted and get 4 sun boards and a hlg-320h-c2100b.

Thats as cheap as i would go and there is still money to be spent to finish that.

Why would you be using 3590's? A lot of unnecessary money spent there.