Log in

View Full Version : Do I have this right?


Backpacker420
07-13-2008, 08:41 PM
Ok, say I had four 26w CFLs, each 2,000 lumens. That would be a total of 104 watts and 8,000 lumens. If I have the formula correct, that would be a combined 76 lumens per watt. That is a low number, correct?

A 400 watt T5 setup would provide 40,000 lumens at 100 lumens per watt. Is the difference that significant?
Weezard
07-13-2008, 10:47 PM
Ok, say I had four 26w CFLs, each 2,000 lumens. That would be a total of 104 watts and 8,000 lumens. If I have the formula correct, that would be a combined 76 lumens per watt. That is a low number, correct?

A 400 watt T5 setup would provide 40,000 lumens at 100 lumens per watt. Is the difference that significant?


Significant?
Depends on what one calls significant' yeah?:)

It's 24%
But, ya gotta factor USABLE light
Lumens are for people.
Plants see things differently.
So, Bro', read da grows.

To mangle a metaphor.
Da proof is in da budding.

Regards.
Weezard