Indoor Running co2 reg and bottle vs. intake/outtake air...

[NMJ]

Im still not quite sure on what i should use, considering im gona be using LEDs, any pointers please

cheers

 

[Muddy]

How big is your grow room? If you run co2 you can have a closed room (no external intake or venting) as long as you can keep your temperatures in check. If you need to exhaust any heat, then you have to time your co2 so it doesn't come on while you are venting. There are controllers available that you can plug your exhaust fan, A/C, and co2 into that will shut off your A/C and co2 while venting but they are very expensive and usually not practical for small grows.

 

[NMJ]

tent will be 2.4m x 2.4m x 2.0m

 

[Muddy]

That's a pretty good sized tent. I would suggest running your lights for a day or two to see how hot it gets. You can run slightly higher temps when using co2, up to about 85 degrees. If the temps stay in the 80 - 85 degree range then you can run a closed room with no external venting.