Lumens.. Kelvins.. very confused

[Ausguy]

ok, ive read ALOT of info on these forums and well, im really confused, some people say one thing then some people say the opposite and APPARENTLY it all works out the same...

OK, first of all!
Is there a forumla to calculate Kelvins to Lumens?

But more importantly..
Can lumens be added up? IE;
A globe producing 2000 lumens + a globe that is 3000 lumens
Does this = 5000 lumens?

OR (since im totally confused)

A globe producing 6500k + another 6500k
Does this = 13 000k?

Is there a need for that much kelvins? the more the better? Except for ventilation and heat issues.
???

FINALLY:
I need this to be plain and simple, i cant handle reading all what i have again cos im going to be so confused i wont grow.. Which i really want to :S

BUT, Whats the best way to go, if I WANT TO grow with CFL's?
Buy a few CFL's that equal to a good ammount?
and can i use the same lights i used for veg for flowering or do i have to buy new ones that are weaker? for flowering...

I dont get it..

HELP ME

Ausguy Reviewed by Ausguy on 03-14-2008. Lumens.. Kelvins.. very confused ok, ive read ALOT of info on these forums and well, im really confused, some people say one thing then some people say the opposite and APPARENTLY it all works out the same... OK, first of all! Is there a forumla to calculate Kelvins to Lumens? But more importantly.. Can lumens be added up? IE; A globe producing 2000 lumens + a globe that is 3000 lumens Does this = 5000 lumens? Rating: 5

[psteve]

OK, first of all!
Is there a forumla to calculate Kelvins to Lumens?

No.
They are completely different, and cannot be interchanged.

But more importantly..
Can lumens be added up? IE;
A globe producing 2000 lumens + a globe that is 3000 lumens
Does this = 5000 lumens?

yes

OR (since im totally confused)

A globe producing 6500k + another 6500k
Does this = 13 000k?

No.
Kelvin is the color of the bulb. 6500k plus 6500k is still 6500k.

Is there a need for that much kelvins? the more the better? Except for ventilation and heat issues.
???

FINALLY:
I need this to be plain and simple, i cant handle reading all what i have again cos im going to be so confused i wont grow.. Which i really want to :S

BUT, Whats the best way to go, if I WANT TO grow with CFL's?
Buy a few CFL's that equal to a good ammount?
and can i use the same lights i used for veg for flowering or do i have to buy new ones that are weaker? for flowering...

I dont get it..

HELP ME

Get 6500k bulbs fro veg, and 2700k bulbs for flower.
Be sure you have at least 70 watts (actual watts, not 'equivalent' watts) per square foot of plant canopy.

[Ausguy]

You have no idea how much that helped me..
Thats all i needed to know cheers man