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

[asylumdown]

oh, and probably even worse - after i set up my very first salt water tank for the very first time, I looked at one of the pieces of live rock near the sand and said "OH WOW! There's like these cool little anemones starting to grow! So awesome!!!"

The correct response should have been to have taken that rock out, locked it in a shed, then set the shed on fire.