nipped fins or fin rot???

[mikedeb]

My glolight tetras ofter chase each other around the tank, and today I noticed that one of them had part of her/his dorsal fin missing. Also, the top fins (on their back) of a couple of others looked ragged. They seem to be behaving normally otherwise, and my corys are fine.

Is there any way to tell if they are just nipping at each other or if fin rot has infested the tank. The only real change in their environment is a ph drop from approx 7 to 6.3 over a weeks time(tank was started two weeks a go with biospira - amonia is .25, nitrate 0).

Any help as to what I should do. If you think it is fin rot, how would you treat it. Thanks.

[Uncle Bete]

I done a yahoo search, for a refresher for myself mainly ;)

I guess if you don't have it, you can go buy some here!

Fin Rot
The Best Directory Matches for fin rot. 1. Look for fin rot at eBay - The World's
Online Marketplace Find it at eBay - Over 5 million items for sale! ...

:laugh:That was number one!

Here's number 2.
http://www.fishdoc.co.uk/disease/finrot.htm

some melafix wouldn't hurt if it is or not.
I used it one time on a Gourami and it worked great!
This stuff...
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4831&D=melafix&R=7078&Ntt=melafix&Ntk=All&Dx=mode+matchallany&Ntx=mode+matchallany&Np=1&N=2004&Nty=1