Quote Originally Posted by Steve2150 View Post
Just replaced my green foam humidifier with a new one about 10 days ago, charged it with 50/50 prop glycol solution well 10 days later there is that cotton type mold growing on it, I thought the prop glycol prevents this.
I would give serious thought to buying humidity beads and using them instead of that type of humidifier. Heartfelt brand has a very good reputation.