Thanks for all the advise, you are right Furan2 is good stuff, and very dare, to do my tank would be about 6-8 sheets over the days to treat.
Don't know if the direct application is working or not, the wound looks no smaller, but also no bigger, she is swimming around more though. I might need to buy a smaller tank to use for treatment.
Not sure how you check the sex, I do know that the female is smaller, and is not as colorful.