I have a captive bread Hippo tang that I purchased as a tiny little baby. The Hippo has done extremely well. Has his hiding cave. Eats well and swims around the tank like a show fish. This morning, I overdosed Kalkwasser because my ph had been at 7.8 for about a week. The Hippo tang was very stressed, laid on its side. I immediate removed all the corals to separate containers and took out the live rock, and removed the hippo to a separate container with fresh saltwater. At first in the separate container he was lying on his side but after about 15 to 20 minutes started to swim around the container and appeared well. I did a major 50% water change, new carbon, skimmer going and waited a little bit. I returned the corals back to the tank which seemed to be doing fine. The only other fish in there is an Ocellaris clownfish. The cleaner shrimp is doing fine, and the corals appeared to have survived as I returned them to the tank they started to open up. I tested the water and all parameters were perfect. and returned the hippo tang back to the display tank. The hippo immediately hit behind a rock and you could see she was breathing fast. Then she swam around a little and looked for what was her former cave which I tried to recreate as best I could. I dimmed the lights to actinic blue only. The Hippo keeps hiding. I saw her come out and swim around a little bit but back to her cave. Her cave is not the exactly the same as it was but similar. I feed mysis and she came out ate and returned to her cave. Will she be okay?
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