Originally Posted by
BananaLizard
My friend is growing in his attic space, his grow is stealthy so he connected a filter to his exhaust vent.
The problem is that he connected the exhaust vent to the blower on the roof of his apartment building.
The blower is way too powerful, when you stand in his tent you can feel actual breeze from the airflow as the blower sucks all the air from the tent,
enough to make the plants sway without a oscillating fan.
He is about to enter the flower phase and he is afraid his filter will not be sufficient.
The exhaust duct is 5", and his filter is rated for 16,000 CFM
(it was the largest one available for this diameter).
1. Can someone recommend a way to reduce the airflow so no odor will leak out?
(For example, will clogging half the duct with tape change the volume of air, or will just increase the pressure?)
2. Will adding smaller filters that will filter circulating air in the attic to reduce the load from the big filter help at all?
(He has 2 duct fans rated to 5000 cfm with matching 5000cfm filters, he thought to just let them run inside the tent)
3. How can we measure the current airflow to know what is the blower rating
(we have no physical to the blower, it's in the machine room on the roof).
Many thanks!
Bookmarks