CFL Help! Lumens? Whaaaa?

BigDirty530

Member
First grow in years, Vegging, 2 plants, I have 3 Eco Smart CFL's. They say they are compared too 150 watts, but they are 42 watts. They put out 2600 lumens each.

My questions are as follows:

1)when hanging multiple cfl's do you combine the lumens output?
like, 3 x 2600 = 7800lumens? or am I wrong here?

2)Watts. Do you combine those? Or should the lights each be what wattage I'm going for?

So confused.
 
Yes, your on the right track, each lights lumen output will be combined, and the 42 watt thing, is what they are consuming power wise. So, there just saying that the bulbs are using 42 watts of juice, but putting out a normal incandescent bulbs worth, of 150 watts of light.
Now, here's where it gets confusing...there's something called the Inverse Square Law, you should check it out, and anyone who grows and doesn't know what this means should, too.
It's a fancy way of saying that if the light is closer to your plants, they will receive more lumens, and generally grow stronger, and more vigorously. But, in your case using CFL's, they can be pretty close to the plants, without burning them. Actually, really close. But, if you bump up to HID lighting, you have to be careful about the distance between light, and canopy, otherwise you could burn your plants.
 

Sr. Verde

Well-Known Member
you need wayyyyyyyyyyyyyyyyyyyyyyyyyyy more light than that buddy

think like 85-100 actual watts of CFLs per plant... AT LEAST... I would say like 125-150w per plant for a healthy plant.

Look up light intensity/photosynthesis/stretching... and look up lumens and the inverse square law lumens follow
 
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