The only 2 times it has happened to me was when I had the rodi going into a 20 gallon drum and forgot about it over night. My system is in the basement, so not as bad as it could have been. I had to rip up the carpet, disassemble the wide screen, components, and surround sound 2 times within a month. That got old with my wife real quick! Good thing it was rodi and not salt water. That would've cost me a few $$. I went out and got a 55 gallon drum, and it hasn't happened since. The bigger container helped me out big time! Other than that, I'm pretty paranoid about floods/equipment failure to the point that I still "drip" alk in my 210 system via gravity feed. That's getting to be a pita though.