Vote Now - 4'x4'x4' with 600 watt

I'm coming out of the closet. I need to set up for my second grow and I would like to build a grow box. Dimensions of building materials make for building 4'x4'x8' box rather simple. This would allow for a double decker box with two 4'x4'x4' cubes. I plan to use a 600 watt light and grow either SOG, SCROG, or LST to control heighth.

I'm worried about too much heat.
Do I need more heighth for this much light?
Are there better reflectors for spreading the light over a 4x4 area?

Any other insight will be appreciated. Thank you.

You will need a high suction exhaust fan at the top for removing hot air and a cool, fresh air intake opening at the bottom.

Pimp's right! I would use an inline for your application..