Quote Originally Posted by JohnNJ View Post
Don't use a cellulose sponge. You can use a natural sea sponge which has enzymes that inhibit the growth of bacteria, mold and mildew.

I keep a wet sea sponge in a dry water bowl in the tank and it provides enough humidity for clean sheds. I rinse it out weekly and soak it in CHD once a month. They last a very long time. You can buy them at Home Depot in the paint department.
That's a very good idea. I had no idea sea sponges worked that way, good to know