jschall;4401381; said:@OP: Get some fresh carbon in there. Could test the water (mainly ammonia and nitrite) as well. If you think any of your fish have fin rot, set up a hospital tank with some sand, gravel, or media from the tank they came from and treat with maracyn 2.
It's a 5 gallon tank. Just add meds and don't bother with a hospital tank. Good idea on the carbon.
