This morning I noticed that my clownfish has contracted ich. I added a royal gramma about a month ago so they both need to be removed from the system. As they are the only two fish in the system. I have an older tank that I started with can I put a few pieces of live rock in it and a power head and get it up to temp? I know I need to get medicine for them and time is of the essence. It will become a quarantine tank after this. I should have known better.