Wow that is scary stuff! I hope that heals up nice and quick. There is a lot of scary stuff in a tank for sure.
You might want to consider picking up some of these:
http://www.leevalley.com/garden/page...,10264&p=10264
they are mucking gloves from Lee Valley. They are pretty rugged I have yet to puncture a set and have been using them for months. I rinse them after use before taking them off then dry them with a towel and just pull them off inside out. They turn right side out easily. A set should last a long time and protect you from lots of bad stuff in your tank.