few quick questions

hey guys im building a grow box 2x2x4 feet and i already have a cool tube (pyrex bake around) for my 400w hps my questions are:

1: will a 160 cfm inline fan be enough to cool the grow box and the cool tube.
I will be running a 1 ft duct from the top of the grow box to one side of the cool tube which will be the intake.Then on the other side of the cooltube i will have the inline fan pulling air out from the box over the bulb and outside. will that be enough cfm to cool both?

2. I can only access my plant at random times and i do not want to interrupt the night cycle. i have heard of a "Green" bulb that does not affect the cycle where can i get this bulb from?

anyone? help?

2. I think that green bulb shit is a myth. HPS emit heavy green-yellow light and they grow plants. I think it's best to keep them in absolute darkness during the night period.

well ok that soklves question number 2 so what about question number 1 would it be enough for the box and the bulb or enough for the bulb but overkill on the box??? and opnions, facts?

A 160 CFM inline is very weak. Is it just a 6" inline fan like you get at Home Depot, or is it a legitimate vortex or similar?

Cool Tubes (home made or not) need 260 or better.

noooooooooooo i have the cool tube setup already drawing air through with the 160 cfm and it keeps it cool i can touch the glass its only warm not hot seems to me like its doing a great job and an expert said u need 80 cfm per 400 watts i just want to know would i be able to connect the intake end of the cool tube to the grow box to draw out the air from the box..