Your dumbest reef related move? Here's mine....

[Aquaria]

Mine was adding a manderian to a new 46g tank about 4m old. My other one was a couple weeks ago When I was at the hospital when my g/f was giving birth I forgot to tell the inlaws that they needed to do topoffs and watch my cpr overflow so on my 3rd or 4th night i had a nightmare that my tank overflowed so irushed home to find my Tom aqualifter had failed and the water was about a half inch from the top of the tank and also about an inch above my return pump.... Fishy 6th sense FTW.