Raise the temp by a degree or two so that the ich's (if it is ich) lifecycle goes faster? Most strains of ich don't die until you hit around 85 degrees F (and some don't die until you get to the 90's), so unless the tank was already at 83 or so, this isn't going to help.
I was going by personal experience and I've definitely had my fair share of ich problems
Martin, it's just that it doesn't make much sense to
only raise the temp. Now, raising the temp
while adding medication is a good idea. Like I said, the raised temperature will make ich go through it's lifecycle faster, which means with the medicine inthe tank, the ich gets to its vulnerable life stage faster and hence dies faster. But, just raising the temperature a degree or two will only increase the speed of ich's lifecycle and infect the fish faster. I don't see how that helps. Like I said, also, there are some strains vulnerable to death via heat, but usually only a degree of two isn't going to be enough to get into the heat death zone. Even then, there are some strains of ich that don't die until the tank gets very, very hot, so temperature alone is in no way guaranteed to work.
stiffler, the picture isn't very clear.
The question at hand -- does it look like little grains of salt on the tail, or it is discolorations in the fins?
Are there any white spots anywhere else at all?