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Originally Posted by invision
So...... If you have 2 400 watt MH's it the same room. You only have 50,000 lumens and not 100,000? Lumens are a measurment that is used for a bulb by itself.Gasoline mixture is not the same.You got 2 gallons of 87 octane! Unless you add an octane booster or a gallon of 97 octane,then it's 87 octane no matter how many gallons,you get!
Ga Grown!
Right... those units of measurement are totally different... octane is a proportion of the total hydrocarbons, whereas lumens is an absoulte value.Quote:
Originally Posted by GaGrown
ok my turn:
If you are talking CFL then the math is a bit different. The normal math we all use and some of you are talking about is for HID lights. Yes many terms are the same but the end results are not. CFL reflect differently and act in a different manor. It's hard to get depth of lumens with CFL they just can't penetrate that far. They are good for inches not feet so that is why most people place them as side light too.
They do and can grow some good bud if you use the right.
But if put them all on one plant reflecting in the same space then yes you would have close to 4000. But as it was said if you move them apart then you have 2000 lumens coverage over a greater area.
Its the depth of coverage that some of you are thinking about. That's how far the light penetrates into the plant folage.
This why I asked, guys. With the idea being to have 2 6500K / 2000 lumans bulbs to be used to veg and then have the plants placed in ground/outdoor for flowering.
I think it will work out just fine. I have seen some closet photos on this very site that show similar (if not the same) bulbs hanging either side of the grow that evidently produce some fat-assed buds.
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Always use 42 watt CFLs (150 watt equiveant).
Keep the bulbs 1 inch or less from your foliage... even slight burn from CFL is worth KEEPING THEM CLOSE!
iloveyou
Right, Knowm. Thanks.