that formula is bullshit. it can't possibly work. what if i have a 1000W of CFLs as opposed to a 1000W HPS. yield won't even be remotely close to the same. forumula busted.


-shake
headshake Reviewed by headshake on . Harvest Calculation? Don't know if this would be remotely correct, but I think I might have stumbled upon a harvest calculation to give a rough guesstimate to your final weight at harvest. Of course everything depends on your strain, etc, this is most likely complete bullshit, but here goes. Here's the formula: Approx Dry Weight *per M2 = 0.001 x watts x flower light period x days in flower So an example would be: Rating: 5