I know this topic has been probably gone over and over again for years. I ready the FAQ along with some other threads covering the subject but I still need some clarification. I guess that means I'm a little slow? 3'D x 4'W x 6'H Custom Closet Desire negative pressure to help with funk Here's where I get stuck. If I want negative pressure wouldn't that mean that I want my exhaust to be pulling a little harder than what my inlets can provide therefore creating that negative pressure? typical threads say your intakes should be 1.5 to 2 times the exhaust size. That sounds like there would be a lot of flow but no negative pressure. I'm sure I'm probably wrong but I'm just trying to understand this better. I'm sure I'll also be fighting with temps with a 400W HPS in there although it will have a cool tube. That said, if I do need 1.5 to 2x the size of my exhaust (6" powered by a 449cfm Vortex with a speed adjuster) then is it ok to have that split between multiple intakes. I was thinking of adding Qty 6, 2" PVC intakes along the front of my cabinet with the 6' exhaust of course being upper back of the cab. I haven't learned how to use sketchup but I tried to illustrate what I mean. Any advice would really be welcome. Thanks!