Hello Mr. Obvious.....Long time reader.....First time poster... This is my first grow in a LONG time. My grow box is a homemade from plywood with dims of 8ft X 4ft X 4ft. Ventilation consists of 4 24VDC electronic fans, 1 stand alone fan and a small exhaust fan with a built in carbon filter. Cabinet is subdivided into a Veg chamber and a Flower chamber. Lights - Veg...150W CFL Flower....400 W HPS Nutes - MG in very sparse quantities plus good ole Superthrive! All plants have been very submissive to my attempts at bondage (LST) and have NOT been topped My "Babies" are 5-6 weeks old and just switched to 12/12 Wish me luck!