help live rock

[gregzz4]

Originally Posted by hillegom

Did you change the lighting? Maybe the calcium/magnesium balance is out of whack. Check your levels.

It's been asked already ... ... but you didn't give us details.




You changed your lighting from what to what ?

Check your Alk, Ca and Mag levels.
If your levels are low/out of balance your coralline will die out.

[Craigdillman]

Yea as above post us some details about your system

How old ?
Hog big ?
What lights ?
What are parameters ?
Any live stock yet?

This will help us answer your question , my gut feeling is tank is super new and cycling and coralline can die out a bit or lights are a lot brighter than tank you bought live rock from and its bleaching both are fine , but If it's been running for a while and this starting to happen different story