I know this is a kind of old post, but I just wanted to say that I personally dont feel like the 12/12 thing is a big deal. Lots of other things require 12/12 lighting cycles. Perhaps your growing a plant in general or perhaps you have pets such as my snakes who require 12 hours on 12 off. I do not personally grow but do keep alot of snakes, enough to be on a noticeable 12/12 cycle and to have had a big electricity jump but I have yet to have any douche bags come questioning me about it.