IntaKe and ExhAusT??

For a contained area, Do you necessarily need an intake of fresh air and an exhaust? Or do you not have to worry about circulation? Would allowing some air in every now and then while making check ups be just fine, with just some fans blowing within??

Hey Starzy,

Yes to all you ask..lol.

You need intake air to cool the room AND it must exchange the entire grow chamber approx every 5 minutes.

You need to exhuast out hot, stale air.

You need to circ the air while it is in the grow chamber.

Simplified outline: Use one fan as your exhaust, but make the intake ports far away from the exhaust fan so the exhaust will pull air into the chamber, the circ fans will make it dance with your girls and eventually the exhaust fan will remove the air. Intakes are low and exhaust is high (warm air rises, cool air sinks).

Another fan is usually used stictly to pull light heat out of the chamber, but not knowing your set up this may not be true.

Hope some of this helps,

Kayuman

Starzy said:

For a contained area, Do you necessarily need an intake of fresh air and an exhaust? Or do you not have to worry about circulation? Would allowing some air in every now and then while making check ups be just fine, with just some fans blowing within??

Click to expand...

Unless you are using CO2 supplementation, intake is required. The plants use CO2 and once it's used up they stop growin.

but if its a small grow area wont passive intake be ok if hes using an exhaust fan?

wowtestdrive said:

but if its a small grow area wont passive intake be ok if hes using an exhaust fan?

Click to expand...

Yes, passive intake would be fine with a properly sized exhaust fan but I think he's asking if he needs an intake rather than not having any intake at all.

Depending on the size of your grow area I wrote down an easy way to intake/exhaust a small area. Idk if this helps, hard to give you a sure fire solution without setup info

https://www.rollitup.org/newbie-central/247213-cheap-easy-zero-mod-closet.html