The pump on this skimmer is rusting, yes rusting after 3 weeks of use. The rust is starting to show where the power cord is coming out of the pump. I had a coral beauty angel in a QT with copper and the finnex skimmer. Last night before going to bed I did my rounds on the quarantined fish and noticed that the angel was acting very funny. It almost seemed like he was having seizures. He kept running into things and I thought he was a goner. I acted quickly and did a 50% water change, added as much carbon as I could, and removed the finnex skimmer.
I donââ"šÂ¬Ã¢"žÂ¢t want to say the skimmer was totally at fault for this. I did have copper running and I did a 50% water change earlier in the day.
However, I can say that the skimmer is rusting and the fish were as far away from the skimmer as they possibly could be. I donââ"šÂ¬Ã¢"žÂ¢t know if the pump was leaking electricity into the tank, but I wouldn't rule it out.