I had this rig going, I switced it over to a bubler inside the box, check out my grow, there is also a thread in the DIY section for this setup, YOU MUST DO SOMETHING TO CONTROL THE HEAT......... and also go to walmart get some emergencey blankets and line the inside of both bins with it, it will be super reflective inside the box so you wont be wasting light, it will also keep light from getting in during the dark period.. with my set up I have a fan on top pulling hot air out and one on the lower side pushing fresh air in, I dried out 9 seeds and 1 seedling without proper ventilation