There is a good video on youtube.
http://www.youtube.com/watch?v=mCbxk5i4_W8
You should always wear gloves when working on your tank.
You might not be stung now, but over time it will affect you more.
Yeah, the redness and burning was gone within a few hours after lots of cortisone and benadryl. Now all that remains are pimple like bumps where each nematocyst fired.
I knew my anemones irritated me, but never figured any of my corals would, but it would make sense with the mushrooms since they are so closely related to anemones.