On Fri, 16 Nov 2007 22:54:43 -0600, Reel McKoi wrote:

How the heck can this happen when nothing has been added for awhile??? I
happened today as this morning they were all fine. My poor clown loaches
are covered, the other fish have some..... what's recommended with clown
loaches that's safe? :*(

There was an article in TFH a while back that treated ich by raising
temperatures and moving fish back and forth between two tanks, thus
interrupting the life cycle of the parasite.

Perhaps someone else has the article or remembers more of the details.