Originally Posted by Mumma.of.two
I'm not sure I'm understanding. Why are you adding it when you add new fish? If your adding a medication you need to remove the carbon until you wish to remove it. If your worried about new fish infecting old fish with something I'd advise getting a QT.
I was just reading the instructions on product (Use whenever introducing new fish) ... I did get a QT and I will use it every time I get new fish (see my MIGHT HAVE ICH article) Have a sponge filter in it. No carbon so it should be okay,right?
Another thing, how should I keep the bacterial/biological balance in my QT when there is no fish in there?