We’ve all been washing our hands more lately. And using hand sanitizer too. But here’s a situation when you DON’T want to use hand sanitizer: if you’re taking care of your aquarium. Pet fish are dying at an alarming rate because their tanks are being contaminated with hand sanitizer! People are using more sanitizer and often sanitize their hands before sticking them in their aquariums. But fish experts say people should wash their hands, not sanitize them before sticking them into their fish tank because too much hand sanitizer is going to kill aquarium life. Wash your hands and save your fish!