So I have x2 1000 HPS(Lumitek and a Nextgen) a charcoal filter w/ a 8' ducting hole, I have a wall a/c unit in the room, I have a 8 inch vortex fan thats sucks about 675 cfm. I use 8 inch ducting in the room, then it converts to 6' then back to 8( the reason i used 6' is because i have about 150-200 extra cfm then i need for my room. My room size is 5 ft wide,9ft long, and only 6 1/2 feet high(cutting it close ,I know).I use 2 window fans that i have mounted on the wall blowing directly under each light and right above the plant canopy(I will probably add 1 more small one). I'm just sticking to my legal limit w/ 12 plants.




(below are room pics)