Over the span of a week all of my corals died. And 1 fish. I’ve tested everything and still don’t know what happened. But I think I kinda “sterilized” my tank. My water changes were 50-60 percent on my 10 g nano. It was my mistake. I’m gonna work on doing smaller water changes. I’m gonna do a rescape and get new corals too. Luckily one colony of zoas lived. I’ll post pictures on the thread tomorrow.