I am in love with my AirROS. I can see myself purchasing a few more so I can dedicate each to a room (veg, flower A & B), wouldn't want to run a grow without one honestly, it's basically crop insurance against mold and mildew as well as very effective odor elimination low wattage use to boot. Someone asked me if they mess up your terpenes. I can say that is not the case. After running the AirROS unit in a flowering room for 24 hours and moving it to another room the stench of weed returns in a couple hours. I suppose the real test would be running one in a drying room during a nice slow dry as there aren't any new terpenes being grown.
I intend to attempt a run with higher RH% through flower to maintain a good VPD situation. I suspect that if an AirROS is running in the room during the entire cycle you won't have any live botrytis spores inside your nugs to make for bud rot in later flower.
I can only imagine the extra yield that could be had if you can stay in the VPD Goldilocks zone. Plus it's cheaper to run my swamp cooler instead of my dehumidifiers lol and shutting down a carbon filter scrubber saves some power as well as reducing the noise.
To minimize the impact if things go south I will probably do this in my 2x4 flowering tent thats located in my veg room. If I treat the air in the veg room the tent will get exposure through it's ventilation (no carbon filter) and keeping my veg room humidity up high is something I do since there is no fear of bud rot in veg. So this time I won't drop the veg room RH% during the last half of the tent flowering when the buds are normally most prone to bud rot.
With co2 enrichment you actually want warmer temperatures and thus require higher humidity to maintain VPD. I generally back off the heat, co2, light intensity in later flower to prevent fluffy fox tailed flower. I wonder how running the higher RH% will effect this. Can you run hotter in late flower with the higher RH% and not get fluffy fox tailed flower?
This thing opens up some doors for sure. Commercial growers won't ever have to worry about passing tests for mold / mildew / bacterial.