It appears I have ich. One of my clowns died. The other one has it as well. All I have in theree is a b&w clown, a rbta, some xenias, a clam, some zoas and my janitors. I have a 3 gallon pico I can use as a hospital tank. What do I need to treat? What medicine do I use? How do I get it out of the display? Someone please help. I am only familiar with freshwater ich