comments:
makemeking706 posted on r/houseplants1d
I use this stuff in our personal humidifiers. Granted we only run them in the cold months, so water never really sits for long. Not sure if it would be good for plants. https://www.amazon.com/Essick-Air-1970-2-Humidifier-Bacteriostatic/dp/B07GXBTH82?