i plan on building a flower chamber about 1.6 x 2.6 ft and posibly 4 foot tall. this is very roughly how big it will be. i plan on running a 700w mars II led in it. I am concerned about heat as we will soon be heading into a very hot summer and i want to be on top of heat and have absolutley no heat issues. These are my two ideas. idea one The intake is cold air pulled from ducting which runs under the house with very fine mesh covering the ducting which stops insects and pests entering the space while allowing air to pass through. and a simple exhaust fan pulling the air through Idea two Same idea as the first. cold air intake with exhaust fan. WITH A TWIST!!! A sealed cavity which seperates the light unit and the growing space. my idea here is fresh cold air will be pulled through the cavity, preventing hot air from building up from the light. while also having fresh air puled in and out in the growing unit. similar to an air cooled hood for hps. good idea or not? I hope this makes sense. look foward to your guys feed back