Rock turning white

[panzermensch]

I have them on a 10 hr timer with 96 pc. Everything started happening after I was dosing with calcium and ion for a week. Any thoughts? Most of it is mainly on a new addition rock also and it is top of tank.

 

[jennm]

Was the rock recently out of water for a time? Or exposed during water changing?

That can kill coralline but if left submerged it will grow back.

Jenn

 

[panzermensch]

Oh! I believe that it was during a water change? I'm pretty sure. I'll take care and pay attention next time before I freak. There really isn't anyway to not expose it in it's present seat. Will it hurt my tank?

 

[jennm]

No it won't hurt anything. Might want to lower the stack so it's not exposed during a water change or you'll have a "line" of white above the coralline (happens too if you leave coralline on the back and/or sides and it gets exposed during water changes).

Jenn