Yes, a big yes anemones can carry along icy. It happened to me. I had just finishing cooking my rock for 3 months, fish where in qt and had been medicated for that time. I decided to buy an bubble tip anemone for my clowns the day I was transferring the fish back into to the display. Well I got hit with an ich outbreak and the only new thing was the btw. Since then I qt everything that is wet.