Iwasaki's, how much actinic?

[Jack]

How much actinic would you need to make a nice white/light greenish/blue look? Specifically one 400 watt Iwasaki, but I am curious on other wattages. I know Christy runs 2x40w NO actinics with 2x250 Iwasakis and It looks great, just check out her website. Im just curious because I will be running a 400 watt 6500k Iwasaki soon. Oh, and Steve, when should I pick up the reflector material? Thanks