nice one little wing, cheers for the comments.
well ive been a bit slack on the build although it currently is in use. I managed to get a fan wired in and attached toa 15v adapter from my old bt router. Seems to do the the trick although it does sound a bit like a plane taking off. Im gonna be changing it and adding another 2 fans for inside the case. its jsut a case of finding the time. Im so busy ive started seeds and because the box wasnt fully finished ive had to make a makeshift cover for one side, it doesnt look very stealthy but its doing the trick so far.
As for temps im finding a 250watt blue enviro is a tad too hot although i think it can be solved. The one fan is positioned right in front of the light so air and heat is taken directly out of the case, only problem there is the light is escaping far too much aswell.. my rooms been glowing like a scene from the xfiles from outside.

I hadnt realised until tonight how bright the light actually is when the lights are off in my room..
heres a couple of pics to show what monstorosity i have built

.. notice the passive intake from the back of the picture, cut into the mylar, which is actually the front.. its the best bit coz it actually works!
Click to view attachment Click to view attachmentthe videos are in there to prop up the riot root cubes closer to the light. They are drying out a bit too quickly which is a slight problem but i think if there is more air blowing around the temps will drop more and hopefully fix the problem. if not im considering going micro Hydro grow