What's the dumbest thing you've done?

[christyf5]

oh god where do I start

Hmm, 6 hour interceptor treatment to kill an acro eating crab), turned off the return pump (put one colony with an acropora crab in the sump. Forgot to turn off the ca reactor which took water from my tank and put in the sump. Overflowed the sump and reduced the level in my tank by about 6 inches. Killed all the frags I was trying to save from the crab and half a large colony. Never did kill the crab.

Adjustments to skimmer made before bed = overflow. I did this about 3x before I finally learned (slow learner).

I think I'll save myself the embarrassment in continuing...