After taking my kids to school today, went to pick some tools at my brother's place; went into the basement and there's this non-pleasant smell, all lights were off, I imagined where the issue was so flashlight and electrical tools; a little loose wire cap. But that smell... Turned lights back on and there was this flickering on/off so turn lights off and find the issue. I have a Brute container that has rock in saltwater; been there for years to sort of keep it live; at times off but then back on. Two pumps circulate the water in there, a Rio 2100 and a Rio look-alike but black plastic. I noticed that when power was turned on, one of the pumps clicked on start so I opened the container and there was the issue; the Rio 2100 died and melted some of the block epoxy material. Nasty black gunk floating so I took all the rock to the trash bin and dumped the water. Now I'm three steps back before any step forward has been taken. If anyone has some dry rock and is willing to part with, please let me know.