Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Cannabis

SHRED

(28,136 posts) Thu Nov 12, 2015, 01:07 AM Nov 2015

I just got an LEC light

.https://www.sunlightsupply.com/shop/bycategory/lec-lep-led/sun-system-lec-315-light-emitting-ceramic-fixture

I had to upgrade my exhaust fan a 4" Vortex 150 cfm to a 6" Hyper Fan 315 cfm. This light is a bit hotter than my old setup.

Question...What is the ratio of intake to exhaust? In other words, for max airflow, do I need to go bigger than 6" for a passive intake port?

3 replies

= new reply since forum marked as read

Highlight:

Venting a grow space [View all] SHRED Nov 2015 OP

Thanks SHRED Nov 2015 #2

I found this just now SHRED Nov 2015 #3