all internals have been removed making way for an internal mounted 400 watt metal halide ballast. a four inch cold air intake line computer fan assisted .air flow prvided by a 10 inch 1000 cfm inline fan reduced to four inch then mounted to the top of back panel .weve gone with the ultra ace en 360 watt hps conversion lamp .the fans are inline with a standard digital thermostat keeping the children75 degrees with an external digital thermometer just to keep tabs .we mother in a rubber maid but have managed to put together a pretty stealthy system with almost no light penetration .this is the maiden voyage keep ya posted
