too MUCH exhaust? possible? extreme ventilation, etc?

[dark horse]

You know what guys, I must be going crazy. Unless I'm doing this math wrong, I have sat here and realized that with even the smallest 4" inline fan, my small 6 cubic ft cab will be receiving a complete air exchange EVERY 2 SECONDS. I am starting to picture some kind of wind tunnel that eliminates the need for a circulation fan. But other than that, is there any harm in "extreme ventilation?"

 

[Yesca73]

I dont think your plants will be happy growing in a wind tunnel
might be better off with axial fan

 

[trem0lo]

You could make an argument for less air exchange, but in the grand scheme it probably doesn't matter much. You could go axial or get a fan controller and turn it down, if only for the noise level. Also when you hook up a filter the airflow will decrease.

 

[soursmoker]

You could make an argument for less air exchange, but in the grand scheme it probably doesn't matter much. You could go axial or get a fan controller and turn it down, if only for the noise level. Also when you hook up a filter the airflow will decrease.

this ^

put a filter on it and you should be good...

 

[Mister_D]

Unless your plants are being physically hurt by the amount of air rushing past them, there is no such thing as too much exhaust.

 

[Dilbert Do]

Excessive airflow causes more noise than necessary.

 

[Kcar]

Your math is wrong. That cfm rating is with nothing connected on either end.
I assume your going to blow/suck through a carbon filter? Also, you cab is closed, yes?
Even with some inlet holes, you'll still have neg pressure.

 

[Oregonism]

See SIG

Ventilation 101.

"........I recommend 5 Minutes per Air Change and no more than 1-2 MpAC to keep stress down on the plants. High airflow rates cause excessive dehydration which is hard on the plants [causing stress][sic]. "
-Directions for cabinets or rooms of all sizes.

Yes, a bunch of air blowing past it will create problems, you will be constantly watering at least.