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BlueB, do you have an RGB analysis for the CMH bulb?

Some people say that plants won't smell if they aren't under stress. Maybe the smell is still being produced but just not being released? That could be a good thing. Maybe you aren't "losing" as much smell. I'm not saying that's what's going on, just throwing that theory out there.

The eye sees 555nm most efficiently. If you have an LED panel with 380nm UV in the mix, they look like they're burnt out.

I've read that black widow from Mr. nice is the real white widow. I have no idea but it's a good story. Might be worth looking into if you're on a widow quest.

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A lot of things could explain some people's bad results. Maybe a lot of people are growing that special strain that refuses to grow under metal halides, lol. Thanks, this is pure gold. But yeah, I think I see what you're saying. The wattage is all the same, do you gain in PAR what you lose...

I find your ideas interesting and would like to subscribe to your newsletter.

I think it's T8 only.

I wonder if e.shine systems makes that light? It looks similar. It doesn't look to put out much red though.

They might stretch less if you leave the veg bulbs in for the first few weeks of 12/12. That would be an interesting experiment. Some people feed them bushmaster. I like the scrog technique to keep them short.

I never saw the point in that panel. HID puts out light in all directions. LEDs put out light in one direction. If you put 6 plants around a 400 they each get 400 watts of side lighting. If you put 6 plants around that 504 watt panel, they each get 84 watts of side lighting. I've never seen...

Vertical grows can do it. If you search for Heath Robinson or coliseum you can see some big yields.