Rough Grow Room Specs. What Am I Missing?

I know this is a really rough print here but I need to get a good plan of attack for my new grow room. I am building this in a attic and I am just at the framing stage now. I am new to growing and I'm looking forward to learning as I go but any input would be helpful. Am I going to need a intake fan for the rooms or will the inline exhaust fan in the flower room be enough to create a negative pressure to keep air coming in through the passive vents? I need all the help I can get. RIU is the shit and has been very helpful in my design phase.

That 8" will not be enough for that flowering room, 2 x 1000w is a LOT of heat + the drag from the carbon filter, you should have that 8" for just the lights in a closed circuit intake from outside the room and then a separate 6" for the carbon filter. Maybe you could get away with it if you had a 12" inline fan, and maybe mounting it right beside the filter so it sucks air in and then blows through the lights and out.

i see in your picture in the middle a small circle saying CO2? if that is your plan than you will be wasting a ton of money on co2 seein as how you are exhausting threw your cooltube,

If you want to run a cool tube AND co2, you should put your carbon filter in an area *outside* of your growing room so you're bringing in cold air from a separate room without sucking up all your Co2 and blowing it out. Then inside your room you should get a 2nd carbon filter attached to another inline to recirculate the air in your room and keep it fresh and clean.

alexonfire said:

That 8" will not be enough for that flowering room, 2 x 1000w is a LOT of heat + the drag from the carbon filter, you should have that 8" for just the lights in a closed circuit intake from outside the room and then a separate 6" for the carbon filter. Maybe you could get away with it if you had a 12" inline fan, and maybe mounting it right beside the filter so it sucks air in and then blows through the lights and out.

Click to expand...

The closed circuit exhaust sounds like the way to go. If I do that for the two 1000w lights can i get away with a 6" for the lights and a 6" for the carbon filter or do I definetly need a 8" fan for the lights? Thanks for your help!!!!

Here is the re-re-re-revised plans. When I go with the closed circuit exhaust and run that whenever the lights are on and run the exhaust fan for the carbon filter only when the tempature control on the enviro control calls for it (the enviro control I am getting has the light sensor and the option to turn off co2 when the exhaust fan is running) will this solve my problems?