Thanks TimeWasteing,
So if I understand you correctly, then by targeting specific wavelengths, you can get the same effect as you would with a higher wattage light that doesn't target.
Also, I was looking at this 28 watt
Grow Light or this 90 watt
UFO Grow Light. Now, both are targeted as you say, but one is 90 watts and the other is 28 watts.
The thing at confuses me is that the 28 watt one looks bigger than the 90 watt
UFO Grow Light. Is it that the LEDs in the UFO style one are brighter? I don't know...
Thanks for your help, bro!