hey 9,

It really depends on temperature. If you are running 10,000 watts and it is freezing outside.. yes, bring the freezing air inside.. you'll need it.

And if you are running 400 watts and it is 105 degrees outside.. don't bring air from outside...

Use the air that best suits your temperature needs..

and NOW you KNOWM
Garden Knowm Reviewed by Garden Knowm on . Fresh air from within my house or from outside ? Does anyone know if itâ??s necessary to get fresh air from outside for the grow room or can I just get it from another room inside the house? Thanks Rating: 5