few indoor growing questions

[mrweedster]

i am setting up a indoor grow closet . it is 9 feet long and 4 feet wide . i have two sets of light one for veg and one for flowering . i also have two ac units to keep the rooms cool and mylar for the walls . i am getting ready to start to rip out the old wood and stuff and build the room so no light from the outside will get in . so here is my questions

1. do i need a co2 tank for the room and why if so
2. do i need to pump in fresh air from outside . my thought on that was in the summer time i would be pumping in pollin .

thanks for the help on this .........

 

[Dirtyboy]

Alot of times if ya pump air out fresh will come in on its own.

 

[desertrat]

i
1. do i need a co2 tank for the room and why if so
2. do i need to pump in fresh air from outside . my thought on that was in the summer time i would be pumping in pollin...

1. no, it helps speed growth but not required. wait for your second grow.

2. no. most rooms are leaky enough to draw air in. if its more sealed, you can cut a passive intake (hole) in your walls. make sure to make it lightproof.

 

[AGSteve]

it will indeed. if i unplug my air intake but leave the exhaust running the intake fan will still spin but at a slower rate. if you have a box in the closet tho you still need to get fresh air into the closet.

best of luck mrweedster