I recently moved into an older Victorian home and I was a little bit concerned about the air quality as I noticed I woke up a bit stuffy in the mornings. My bedroom has a return vent only, so there is no air moving into the room while the door is shut when I sleep. I contacted Brad to inquire about his planters and he informed me that he does air quality testing before, during and after the planter was installed. He told me that my room had lots of airborne particles that were high as well as the co2 levels were high. After having the planter in my room for one night, Brad told me that the levels dropped significantly. Not only that, but when he removed the planter, the following night I noticed I did not sleep as good. The quiet hum of the fan was the perfect white noise I needed to help me sleep as I live on a main street. I also loved waking up to the smell of a fresh garden.. To top it all off, Brad told me I only have to add water to the unit once a week and the lights are on a timer!!! It is ease of comfort, user friendly and a healthy alternative to current home filtration systems.