Hi I'm currently in the middle of setting up a 20 light 1000W hps. I practically using the whole basement for my set up approximatly 1200 sqf. It will be split into 3 different cycle, 120 plants per cycle, harvesting will be every month. I've just completed framing all the walls and will be putting the dry wall up soon, ventillation is drawn upstairs to a bedroom where i build a large cold room before filtering it outside through the roof. I have a few project coming up which is about the similar size, usually takes about 2 days to complete the whole setup. I'll post pics soon was going to show you guys the before and after pics but you'll get the idea.