Quote Originally Posted by Sherita View Post
When you get up in the middle of the night to use the facilities and then decide to check on the tank/s since you are up anyway.

And you know you are a "real" reefer if any unusual noise coming from your tank will bring you up out of a dead sleep faster than an alarm clock (or when there is NO noise at all, and there should be).
haha had many of those happen to me