I'm glad you're so dedicated. A lot of people have different preferences ... I would just fill with a type of bio media as a second filter ... And I would take the suggestion to move a good filter on to the hospital tank asap.
Cloudk;5037688; said:And how long will it take to have the filter "cycled". In my main filter, I have bio-max and a carbon ammonia remover. Both of which idt will assist me. Other than that, I have a sponge from a similar filter. If new media won't help the oscar, then I can't help her other than do water changes every other day. I will do one today.