What is the Stupidest Thing you Have Done, or are Still Doing, With Your Tanks?
....is the stupidest thing you have done ,or are still doing with your tanks ? you know it's bad but you do it anyway? Like extra food, treats or water changes?
One thing I do , well don't do, is use heaters... I live in Florida and I keep thermometers in all my tanks, no heating/ cooling problems though.