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I had a special order through TastyLED for diodes Kevin didn't have in stock. I want to say it took a little more than a week to arrive. :leaf:

I haven't run the numbers on that yet, I'm sure you're not taking into account labour or risk. If I go outside and ask someone for an eighth and the answer I get is on the ring of $35 for good bud and $40-50 for outstanding bud, the wholesale prices will follow the retail prices, in a linear...

2 g/W in a VSoG, D-VSoG or a Q-VSoG seems plausible, this is my end-game. For now, I'm running top-down in a SoG. My conservative estimation is 1.6 g/W as I've seen HID accomplish that task. Being a newcomer to LED, I'm having to compare the new technology to my experience with HID. Given the...

I don't have the newest sheets, just what I found for sale. I'm looking at the 85° C figures, I'm more than aware. All of the comparisons were done at 85° C. I still think I made out for what I have. You like yours, I like mine. :leaf:

@ttystikk They are best for ripening, IIRC. Turn them on for the last 2-3 weeks? I could manage that. Where to put them though... Dual or Quad.. the only room I could see is EB strips under the canopy.. and those won't even be necessary. I bet the distance of those T-5's are the same as...

I never used them, everything seemed frosty enough. Besides, I spend too much time talking to my plants (honestly), I wouldn't want to have to budget that with UV rays. Maybe one day, when I'm not that interested in watching the miracle of life.

Wasn't it the quartz tubes we need to get for proper UV? We would also want to stay out of the grow room when they are on.

Everything is in the preliminary phase. It is nothing but calculation. I'm sure by the time I'm done with this I could tell you exactly how much of every piece and what size to make them. I'm just excited to think I could possibly fit 700-1900W of COB into one square meter. :leaf:

That plant looks hungry.

From what I can find the 3618 is $100 a chip. The 1825 is on sale right now, I don't know how long that will last and I'm not sure which chip is $35. From the data sheet, the 1825 produces slightly more (~500 lm) at 2.25 A? With about 140 lm/W. The V29C is at 1710 mA and 155 lm/W, at 2565 mA...

If street value is $35 an eight a pound should be around $2,500, give or take for appearance, quality etc. If the street value is $20 an eight a pound should go for around $1,500.

That's something on the ring of 76,000 lm for one square meter. :weed:

With the amperage increase I'd expect ~160 lm/W instead of ~180 lm/W? I'm estimating from the data sheets. @Rahz

How well do the V29C-SE fair with 1400 mA? Would the 150 mm heat sinks need active cooling or to be replaced? @Rahz

Fibonacci. This secret to life is Math.

For shits and giggles, I decided what I could do with the same design using HID. Turns out, in order to accomplish that I would need two 600W HID with cool tubes and ductwork. That would drive initial costs up. I didn't do the numbers, but it seems the waste heat of HID, coupled with proper...

Roots turn brown from the metabolic process of sugars, the browning is caused by alcohol being expending through the roots.

When I had the GH dry nutrient line I purchased Cal/Mag and used it frequently, soil and hydro.

@ttystikk From my calculations we would have a usable lateral growth of 9.8", with the ceiling as the only other constraint. With a meter tent everything seems to fit perfectly. I don't know why I didn't think about using the circumference of the Earth to design my setup. It only makes...