A few days ago I notice that one of my two clown loaches (about 1.5") had tiny white spots all over. I then move it to my sump while I set up a quarantine tank. When I went to take it out, he was gone. I think he got over the divider an got suck into the pump and became fish food. My GT, two bleeding hearts and the other clown are all fine with no signs of ick, but I'm concerned of contamination. The clown had been in the tank for about a month. What is the best way to treat for ick? By the way, this was three days ago. Thanks.