Quote Originally Posted by BobBong
Remember that the output of light is not added together, So don't add the lumen together.

Say you have 4 2100Lumen CFL's .. The distribution would cover more area but you would only ever have 2100 luminous output..

Ya dig?

2100lumen + 2100lumen doesn't = 4200lumen. It only means you have better distribution of 2100lumen.

Cheers,
Bob.:stoned:
Depending on how it's done there will be some overlap between bulbs.

For example take this picture of my herb garden I started. You can see on the right there are 2 power strips with lights facing sideways toward each other. Now ignore the fact that I haven't made a hood. Taking this situation as plainly as you see it shows you can see there is going to be overlap between bulbs.

Light simply doesn't stop when it meets another instance of light.

So while if you had 2 2100lumen lights side by side it probably wouldn't make 4200 lumens, but I think it's safe to say it would make at least 3k-3500 lumens; if set up similarly to my cfl's on the right that is.

So I agree and disagree with you. Yes it's better distribution of light and you aren't doubling up your lumen output with each additional light, but at the same time you aren't simply outputting 2100 lumens as stated in your example?

I hope that made sense. I'm a little stoned myself. lol :jointsmile:

edit: If anyone is interested.

The 4 pots off to the right but in front are basil.
The 2 pots behind those are Cilantro
The pot kind of in the middle front is Rosemary (it broke soil you just can't see it in the pic).

The clear container are dwarf okra soaking before I stick them in a paper towel to germinate.

The 2 paper bowls on top of each other have the following germinating in paper towels inside ziplock bags:

Tiny Tim Tomato seeds
Hot Banana Peppers (wax Peppers)
Cilantro
Rosemary (rosemary is a pain to germinate. Started 30 seeds and only got 1 sprout).