Do you have any gravel in the qt tank? Is there anything that the fish could be rubbing into that is fraying it? Or maybe the other fish in the qt are the cause? What fish do you have in there, just a single damsel?
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.