live rock turning white

[saltyj]

hey guys,
I just got some new bulbs for my PC's and all of a sudden my rock that was covered in coraline is now turning white. What is going on? Is this normal? I dose the tank every night with oceans blend and once a week with iodine. Also I have 260 watts and the tank is a 75gal.
Thanks,
saltyj

 

[timo]

This can be a normal event following a bulb change.

 

[newbiesalttank]

I would suggest that you check your calcium levels. Also, I was wondering how long did it take for you to change your light bulbs and are they the same type?
White usually means that the coralline algae is missing something vital...usually calcium or sufficient light.
Good luck

 

[reefnut]

Test before you dose. Your tank may not be needing all that iodine... and what is ocean blend????