about a month after I started my tank, one of the LR started growing small patch of dark-purple star polyps (they open when light is on, and retract when light is off, wonderful!).
The polys then suddenly disappear over a night and never grow back.
What could be the cause? Don't want it to happen again
The polys then suddenly disappear over a night and never grow back.
What could be the cause? Don't want it to happen again