actually I thought this thread was becoming quite informative. Theres nothing wrong with providing information to each other. I don't see it as an arguement.
I answered the OP by stating that MH were the best option in the past before HPS came out and growers were quite successful but that there is no denying HPS is more productive. Having gotten that out of the way I think it would be good to use this active thread to discuss some of the better ways to use MH for flowering.
I would still like to know if a sativa plant ought to have more blue light than an indica during flower, given that sativas naturally grow in a climate that recieves blue light all season.