If you are going to injure your hand, it will be either a large wound or a deep one. It will be on your dominant hand, it will be in a spot that is either difficult to bandage or difficult to keep a bandage on, and it will happen either the day or the day before you have to have your hands submerged for a long time in order to do water changes. Two weeks ago, I sliced my finger wide open on the aluminum seal of a Repto-Min can. Yesterday, I ripped off a chunk off my finger on the rope at the Parris Island hole (#11) on the disc golf course. Both times, it was (of course) my right hand; one the night before water changes and the other the day before. The last time, I got a deep cut on my index finger from a glass that broke in the sink…the same day a shipment of aquarium plants arrived and needed to get put in the tanks.