Quote Originally Posted by iamgrowerman
That's a really good point. I'll have to remember to point that out to him the next time he's bragging about how big and bright his lights are.

You say you use 40w CFLs - I'm assuming you mean 40w actual, with a 100+ equivalency? A 26-27w CFL is supposed to be a 100w equivalent, so I'd guess a 40w would be about 150w equivalent?


Has anyone done any kind of comparison between the lumen output of, say, 5 100w equivalent CFLs versus one 500w equivalent? Does one option make more heat than the other?

I'm tempted to try a little side-by-side but there's no point in reinventing the wheel if someone else already has. (Or spending a bunch of money on it.)

that's all bullshit, look at the actuall wattages when you buy, and some bulbs don't specify the spectrums, if you can't tell, leave them in the store.

and yeah, the 40's are equal to 150's, really though, forget that bullshit, it's just marketing hype.

another thing for you to consider is that, in truth, CFL's will produce more heat than an HID, watt for watt, the difference is that with HID's, all the heat comes from one source only, with CFL's there are many sources so the heat is spread out more.

what would be cool to test is a comparison between 10x40watt CFL's against 1x400watt HPS. the results of that test would really have some value.

anyway, toke amongst yourselves