My only worry is your vortex. If it is rated too much cfm for the filter you can see two things : poor odor reduction, and or premature expiration. A speedster controller can be used to tune the cfm's for the filter. Even if the high cfm still allows for odor reduction, you will be pulling excessive home air through it. Every time you smoke or cook or poop or do anything else that causes odor or smoke, that filters carbon will adsorb it. Enough "stuff" and it loads and becomes ineffective. In a small grow, say 1-5 plants, I would say at least a year, though this view is admitedly based on research and info from other growers. I have used mine nearly 6 months and it works great still, though it restrcts the air more now a bit. Also organic grows using fish emulsion and smelly nutes will tax a filter more so than an all hydro grow. Humidity should be less than 70% for maximum odor reduction.