Help. Help

[Aquattro]

Rachel, add some carbon and do a water change. Most likely cause of the ones listed is water from the store. If they just changed the membrane and didn't run a few gallons thru it, that could cause problems. RO membranes have an anti-bacterial coating on them.
Magnet shavings won't do it and I've used Windex for years. Make sure there is lots of circulation to help the wrasse breath. Make sure your skimmer is functioning well also. If the water from the store added something, carbon should help a lot. Also make sure everyone is accounted for.