Hydrohut Mini Hydroponic Grow Tent?!

see if the place you found that at, has the larger version. If you have the space for it.
The larger one measures 4'x4'x6'7" an extra foot either way.
It is a bit more sturdy than the smaller (as you can probably tell from the bowing the roof in the pic is doing)

 

Do you know what type of system you want?
My recommendation would be a flood and drain tray system, is this just for flowering? or are you using it throughout the grow?

 

If I where you I would take celebralJames suggestion and go with the 4x4x7.
but if you cant and the 3x3x6 is your best fit then it will be good as well

Down to what to use inside a hydrohut
- I would use a EBB n Flow system( get the 3x3 eeb'n'flow syste, will fit in there perfectly)
- I would the stuff the 3x3 tray with rockwell qubes and just leave out on or two for you drain.
- this setup is good if you are going to a maincola grow and if you do this setup u would need to veg till plants are rooted and force grow....or the plants will get to tall.
-use AN 2+ and you will be in shock on the yeild for this setup....perfect persy setup
-also for lights i would go with a 600w because it is 3x3.....a 1000w would be excellent in a 4x4 hut..

hey hope this help..goodluck on that...

 

Looks good, what do you have growning in there??