Today I bought something for cuts as my paradise fish has a small what I think must be a heater burn on his face and one on his body, they have a dark pink tinge to them and whilst they do not seem to be bothering him I bought him something to help which is all natural with tea tree oil, on the back though it states to remove carbon from the filter why is this?? I do not have another tank I could put him into unless he could go into a bowl or similar thing whilst getting treated and then taken back out again but I cannot see this helping much as he couldn't stay in there longer then an hour or so, so do I remove the carbon? Do I risk putting it in? Or do I see if it heals on its own?