the rock is just a rock, but the bacteria, bugs, tiny crustaceans, worms, etc living on/in the rock can die yes. If it ALL dies, it becomes 'dead' rock.
The coralline algae bleaches and becomes white. Other encrusting oganisms turn black and slimey. It will also have a foul smell. Ammonia may increase in the tank.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.