How do i work out yields?

[llamaman666]

I like this equation: X=watts HID, Y=30 days of veg, Z=grams
1/2X times Y=2Z
of course strain grower expeirence blah blah, thats a good starter

llamaman666 Reviewed by llamaman666 on 04-19-2005. How do i work out yields? I was just woundering what is the best way of working out yields is there a certain amount of lumens per gram or something Thanks Rating: 5