What's the dumbest thing you've done?

[kwirky]

I made so many mistakes with my first 18g nano reef tank.

I had to do a water change and I didn't want to mix up the saltwater separately. So I added water straight from the tap, dumped in some prime, and put the salt in and watched it slowly mix before my eyes.

3/4 of my frags died

I once rearranged my rockwork, then thought "where'd all my snails go?" and then scoured the rock over and found I had most of them compacted on the bottom of most of the rocks...

When I first got my mag 700 I wanted to see how fast it was but I didn't have my tank ready yet. I did it in the bathroom sink. That was a mess