colaline turning white

[chevyjaxon]

my guess is dead, no worries though in time it will regenerate!

[Tom R]

My guess is it is dead. If you let your water height fall or during a water change the coral line algae is out of the water too long, it will dry out and die. This happens very quickly if you have your MH lights on at the same time.
It will grow back over a period of time.

Tom R