Live Rock Turning White ???

[1112-425XL]

Noticed an area of liverock turning white. What causes this? All coral and fish happy.

Tank age- 2 yrs
Sal. 1.025
Alk 9.0
Ph 8.0
Nitrate 20.6
Phos 0.28
Temp 78°

 

[TinyReef522]

Do you have an urchin?

 

[1112-425XL]

I have two tuxedo urchins. If you zoom in, one is on the white area.

 

[Lavey29]

Urchins clean the algae and in doing so they scrape off top layer of rock too

 

[1112-425XL]

I've had both Urchins for a year and a half. They are extremely active. Have never seen anything like this. Looks more like something encrusting on the rock.

 

[Lavey29]

I've had both Urchins for a year and a half. They are extremely active. Have never seen anything like this. Looks more like something encrusting on the rock.

I have 3 and they strip my rocks white

 

[Brandont21]

I agree with, Lavey, my urchin does the same. Parts of rock will be completely white once hes done

 

[1112-425XL]

Thanks, if that's what's happening I'm OK with it.

 

[Dan_P]

Noticed an area of liverock turning white. What causes this? All coral and fish happy.

Tank age- 2 yrs
Sal. 1.025
Alk 9.0
Ph 8.0
Nitrate 20.6
Phos 0.28
Temp 78°

What color was it originally?

 

[1112-425XL]