I had 5 small tetras and 2 small clown loaches die a couple of weeks ago from ich. They died within a week of getting the white spots. I treated immediatly with meds, raised the temp and did 25% water changes every 2 then 3 days for 2 weeks during and after the fish had died. I also have 2 blue & 2 gold gouramis about 3" in size along with 2 Red Dwarf gouramis about 2.5" in size. None of these fish ever had a trace of ich during the time the little ones had it. I want to ad some more loaches to the tank to feed on the snails that are multiplying, but afraid to spend the money on the fish to watch them die again. Would you think that it would be safe to ad new fish to the tank if none of the current fish show signs of ich? It has been a 1 1/2 weeks since the small fish with the ich have died. I am also wondering why the ich did not attack my bigger fish?