Good news! I was able to distinguish (via a comparison side-by-side shot)
that the critter is tetrahymena, not chilodonella. Similar in appearance and
behavior, except that tetrahymena is relatively harmless and requires no
treatment.

Whew! Now I just have to keep an eye on them. Thanks RTB.

Lee

"RichToyBox" wrote in message
news:EHmcc.192323$_w.1884051@attbi_s53...
Lee,

I am sure you have looked at Doc Johnson, but if not, he only mentions the
use of salt for chilo. When he was here a couple of years ago, we
discussed
the use of the toxic chemicals. I think that he agreed that between salt,
prazi or supaverm, and dimilin or anchors away, that all of the parasites
could be taken care of without any of the formalin type products, fluke
tabs, pp, etc.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html