I was mixing salt last night for a water change. I added my RO water. I put salt in Bucket with RO water. I put my Rio 2500 in the bucket to allow it to mix my water for a while. I got about 10 steps away from the bucket and I heard a loud Pop. I had heard that POP before. I quickly unplugged my Rio 2500. There were pieces of small plastic all over in the bucket. Thats how quick it happened! I dumped my water/salt mix in the bucket. I could smell the burn smell for a long time in my garage. The sound of a Rio going some where....did not get me this time!