So I'm flowering my first grow now and is going well. You can check out my grow in my signature. Anyway for my next grow I want to step it up and start something perpetual. I'm planing on running two chambers. I'm not sure if I want to use tents or a box that I would make. I know I want 4 plants per chamber in 5 gallon buckets. Im going to stick with soil for now. I want to use 400 watt cool tubes. One in each chamber with one ducting tube hooked up to each pulling air out, then both ducting tubes will meet at a y then connect to a fan pulling air out. I plan on having the other end of each cool tube open pulling air from the room. Each chamber will have a passive intake. Smell isn't a huge issue so I'm not worried about a carbon scrubber. Would two 24 inch x 48 inch tents work? Or should I go bigger? Or build my own? Also what cfm rating do I need to pull air out of two chambers?