Intake air questions.....

How do you bring fresh air into a grow room most effectively? (detailed)

Whats the difference in plant growth between a room with just exhaust and 1 with exhaust and intake?

Google "negative pressure"....sorry I'm getting sick of answering this question....

The negative pressure thing always gets me. It seems to me that I can drop humidity better with positive pressure, and raise it with more negative pressure., but I'm not certain. When I grew in the garage I had an airconditioning unit supplying the positive pressure, so it could have been the A/C dropping the humidity. Now in the basement I have more negative pressure, but more humidity, but that could be from having the grow in the basement.

LegalizeNature420 said:

How do you bring fresh air into a grow room most effectively? (detailed)

Click to expand...

6" tube running from The Great Outdoors to your grow room. The great thing about The Great Outdoors . . . LOTS of fresh air out there!

If the room has negative pressure, no fan attached to the fresh air tube is nessesary.