aquajeck

Hi try this link to an article on ick. It should help with alot of your questions.
http://www.aquariumadvice.com/articl...ck-/Page1.html

One of my orange platies does not seem to be fairing so well, and I think it has Ich. He/she and the algae eater lived in this established 10 gal alone until I added a few fish 2mos ago. One molly died a day after a water change early on, but everyone else great,except the one original platy! Here's what I think happened. I'm not sure how,so I'll blame my husband, but the fish were stressed,so checked the temp-88! I turned it down, and all are fine 2weeks out...except that platy. It lingers at bottom. I have been watching for Ich, and I have kept temp at 82/83 and put more salt to prevent it but saw white spots 4days ago. I know the water's infected, not just the fish, but I isolated him anyway, and have watched others, who show no signs. Is it possible to keep the others from getting ich by temp up/salt/daily water changes?am I kidding myself thinking that I eliminated the prob?