I recently got a 6-line wrasse and a tail spot blenny and started their quarantine. About 3 days after I started the copper my wrasse suddenly slowed down and after a couple of days unfortunately died. My blenny is still alive but was acting a bit odd before I went on my trip. I am currently out of town and just realized I have my copper at 1.5 instead of 2.5 ppm. Would that have killed the wrasse and should I be worried about coming home to the blenny? Both ate pellets and brine and were doing great until the copper started. Just in case it could be something else my nitrates were 0, my salinity is 1.024, and phosphates are 0.