My first Reefer 350

[intarsiabox]

Originally Posted by wes_22

So for one week clowns and clean up crew was doing good till last week clowns suddenly was covered with white spots. it happened right on next day when i did 5% water change. I have tried to treat them from ICK but with no luck
Clean up crew doing good but i have lost clowns

Not sure why this happened, could it be that introduced when i changed water?
Im not ready to put new fish any time soon until i figure out what happened and make sure it safe to put new fish.

When you say you treated them for ick, you didn't put medication in the display tank did you? Most ick medications are copper based which is highly toxic to corals and absorbed into the rocks and sand.