Can anyone help identify what is in my bucket, and how to get rid of it? This started one day when I was making up some new saltwater. It was a while ago, and I'm not sure exactly what happened with my mix, but I ended up getting a brown slime across my bucket, and across the powerheads I had in there. I may have added some buffer before I knew better. I cleaned this out as much as I could, but it hardened into something that is very hard to remove. I would be fine with this, but whenever I make new water, more 'slime' is created. I can remove the new slime easily before it hardens, but I have not found a way to remove the hardened slime, which I as assuming is responsible for the new slime being made each time I mix water. The easy solution is to buy another bucket, but I am more interested in what this reaction is and what is causing it. Has anyone seen anything like it?