Well, while I was cleaning my 10g aquarium, my Top Fin Floating Thermometer slipped out of my hand and broke on my tile floor. I do not have the packaging anymore, and I need to know if this particular thermometer contains mercury, and if I need to act right away or just disregard the situation in general. I tried looking online, but I can't find anything specific that states that it does, but as it is a thermometer, I don't want to take any chances. If anyone knows if it does, I'd truly appreciate it if you could tell me asap. Thanks