acros dying

A few days ago I recently did a routine water change on my aquarium and when I plugged all of my equipment back in, everything seemed off. First, my Rainsford and Mandarin Dragonette were showing weird swimming patterns. The Rainsford normally liked to hang out in front of his hole but now he...

I’ve had a reef tank for more than 30 years and have had acros for around 15 years. I’ve never seen this before. Starting about a month ago, several of my large healthy acros started turning white around their bases. Slowly, the white grows until all the coral’s tissue is gone. It started...