So on the 5th we moved all my fish from my 22g to my 10g QT tank. Those being two purple firefish, one clown goby, and two clownfish. In the QT before those were added was a coral beauty and a six line wrasse. And the first day after we did a FWD on the coral beauty he died.. Now going back two days one fire fish died, we just thought he died because of stress since doing the move from DT to QT he got beat up pretty bad because he was in the rocks and we couldn't get him out. We put one dose of KanaPlex in the QT for his lip since it got cut. But other than that there's only copper in the tank. Now yesterday the other fire fish died and now today the six line is on his way out.. I'm so confused as to what is going on, I don't think there was an ammonia spike because all I did was go from feeding once a day to maybe twice or three times a day and I made sure it wasn't too much.. But also maybe it could be the copper? I know we haven't added copper everyday so maybe we didn't ramp the copper up fast enough? We usually check the copper then see what it's at and like right now it's at 0.4 so we added a few more drops of copper but the last time we added copper was two days ago so I don't know if that's the problem? Also all the fish that have died, were all breathing fast and laying on the bottom but that's it for the signs.. Also all the fish have ich so I don't know I'm so stressed and worried.. And also there is a ammonia badge on the tank and it's on yellow so ammonia is fine.I just don't want the rest of my fish to die.. Also in the tank we have gravel sand and rocks, I don't know if that's a problem or not?.. So please if anyone could help it would be greatly appreciated..