What is up with my Clove polyps?

[bristleworm]

They just started doing this.
Full disclosure,
I went out of town for a couple days and forgot to turn on the ATO after a water change.
The back sump got low and the heater cycled on/off with an error state for about 12 hours.
Salinity change, temp swings, both?

 

[saltwaterfish.com Verified Sponsor]

Most likely stress caused by both, monitor your salinity and bring it back down slowly and I would change out the heater to be on the safe side. You can throw a little activated carbon in as well to help draw out any toxins released from the stress.

 

[BryanM]

Yeah, just get the tank back to normal and give them a few days. They are pretty hardy.