Who Gives A Fish Forums

Also, consider your photoperiod. If you increased light intensity or duration recently, they might need time to acclimate. Maybe reduce lighting by an hour for a few days.

Could be a few things. First, check your alkalinity and calcium levels. Zoas are pretty chill but they don't like swings. Also, any new fish or inverts added recently? Sometimes a crab or shrimp can bug them. What's your temp and salinity at?


Agree with Buddy. Alk swings are a big culprit. Test ...