Yes I have had it be an issue. I had a frag/qt tank at one point that I just set up and used after a vinegar cleaning. All the frags died in it for a period of 6 months before I took it down and replaced the silicone. Problem fixed itself. I also did get confirmation after going back to the original owner, that copper, not cuperamine, had been used in the tank.
Were you able to detect copper with a test kit?
michika
07-24-2009 01:10 AM
I believe so. I did however not do the test myself, I brought the water to someone else to do.
