Not sure if this is the correct place to post but I recently purchased this product and had a concern. I've been using this product a few weeks and just yesterday noticed that a brown spot appeared on the sponge. I'm assuming it's mold but wanted to ask everyone the best course of action.
Now I've been using RO system water (Reverse Osmosis System) or filtered. So the water is clean, for sure. It's been working great considering it's keeping my case at 50% humidity. Just that I got surprised that it could be mold.
Should I use vinegar or something else to clean the sponge out? I will be replacing the sponge but just for a precaution in the future, in case the new sponge molds...
