Funny thing...I just read some guy's response to someone's question on Yahoo! Answers regarding hobbyists and water changes, and this one guy felt very passionate about the exact opposite -- he claims he has been keeping fish for 25 years and he NEVER does water changes, going on to support the benefits of good filtration and evaporation topoffs (I know all the stories about replacing trace elements and nitrate issues in this regard) and how he never agreed with the water change theory...that he believes removing large amounts of water in a tank system can dramatically throw temperature and chemistry off thus causing more stress to the inhabitants, and so he only did the evaporation replenishing thing, citing an imitation of nature (and yes...I have read all about the open ocean systems and their way of "changing" the water and replenishing vital elements and such)...
It was an interesting read, but that's for another time...
As for my fantail, she's not really "injured" per se; she hasn't been attacked by the Calico at all...just playful nipping which they all seem to do to one another at some time. I was just wondering if the small area that seems to be frayed a SMALL bit on her tail would repair back to normal over time...
Would adding some stress coat help?