Better yet , which is better...

Filter BEFORE exhaust fan...

Filter AFTER exhaust fan...

sucking or pushing the air?

~Zion
Zion High Reviewed by Zion High on . lots of plants....lots of odor say for example i had a friend who was growing well over 500 plants and couldn't keep the odor down. What are the best systems/filters and what else should he try. He has great ventilation already. Thanks Rating: 5