DIY flower box thoughts

[Touchmejesus]

My fake wall isn't working so good so I'm going to make a box with hardboard and wood studs, I am going for a box of 60cm width x 100cm depth x 120cm height

I have a 400w hps with a cool tube that I could run across either depth or width, my only worry is light spread. I have a 6 inch axial fan on the cool tube, I have an oscillating fan, I have a 10 inch rvk I could use for box venting.
The box is only 90 cubic meters so that should be A OK in writing. I'd coat the box in diamond mylar.

There would be a door on the front 60cmx120cm side. Would the lamp be too height?

Just wanna get some feedback on this pre build so I don't fuck up.
Cheers

 

[orangehaze]

I have a 400w hps with a cool tube

You'll do absolutely great with that lamp. If you don't have any heating issues you could add 1 or 2 CFL bulbs but you might not need to.