Hi Weezard, Weedhound and Stinky thanks for all the sound advice, you're giving me lots of good nuggets of info, it's been very helpful. Gave my Widows a good old watering yesterday, they loved it, soaked that water right up. My pots have good drainage, about an inch flowed into the trays and the next morning it was gone. I think I will go with the 400w, I want nice big juicy buds and I think that addition power will help my babies turn into beasts.
Thanks again people.