Thank you for the links!! I put in the Super Ich about 14 hours ago. I can't get a good photo because he's swimming too fast, but there are three of the 'cysts' on the orange part of his head. The ammonia level is .02 and the pH is 7.6. I don't have a nitrite/nitrate tester, but I'm guessing that's the next thing I should get. I had received two fish as a surprise gift so I didn't know about "cycling" before putting the fish in the tank, and already lost one last week. I replaced some of the water after the other fish died.
The fish mostly stays swimming at the top of the tank, seemingly agitated, and going under the bubbles the filter creates, sometimes eating them. He had been doing this most of yesterday before I noticed the couple of white spots appear. I only feed him once a day and have always pushed the food down.