hey anbesol,

check your power bill for per watt price you pay(govt mandated to be there), and multiply times id say 500-600 to find out the impact it will have. dont forget your ballast and other items in your tent will use power also. definitely will have heat/burning issues w/ a 400 in there. cooltube extracted outside...gonna be some work, but good luck to you:thumbsup:

db:smokin: