Originally Posted by Byron
That should work. Keep the temp raised for a good week, even two. Of course, as in any treatment no matter what or how, monitor the fish, and if signs of stress appear, lower the temp a bit. This would be increased gasping at the surface for oxygen. Which reminds me, an airstone or other increased surface and water movement when temp is high is fine, although here we are dealing with an anabantid that breathes atmospheric air normally, so I wouldn't expect the lower oxygen level in warmer water to be an issue.
That's right, I'd forgotten about the whole hot water, lower oxygen thing, but yes, he's the only critter in there right now, the Killis just arrived today and the cherry barbs won't show up until next week. I can keep them in the second tank until he's ich free for a good amount of time, though that means I should get a second heater and I really need to invest in a hood to help keep the evaporation down in the bigger tank and to help trap the heat in so I don't have to crank the heater quite as much.
*of course, the hood would also keep down the migration of small plastic toys my sons think will look good in the aquarium too*