any ideas what this is?

[fortheloveofcrabs]

That really stinks that I got this stuff. It is the only one, and teh rock has been in my tank for about 6 months... closer to 7 I guess. He, or 'it', is on a small peice of rock that kind of has two rock things that just out of it, making it look like it is between two rocks. I am going to buy a needle today and do my best. I've heard that lemon juice works well too, any comments? I inject the stem of the thing - I presume? From the side or top. Other forms seem a little vague on that. Thanks again!