LR turning white?

[kobain06]

My live rock is turning white. Is this good? What does this mean?
background: 24 G nano, 30 lbs LR, 3rd week of cycle
PH 8.4 ppm
Amm 0 ppm
Nitrite 0 ppm
Nitrate 20 ppm
any answers would be helpful, Thanks

 

[barchtruong]

turning white from what color? purple?
if not, then you are fine.
purple will tank over later.

 

[kobain06]

Turning white from brown due to my diatom bloom. also I'm starting to see purple. I hope this is regular?

 

[sepulatian]

Yes, it means the diatoms are finally subsiding and the coraline is taking over. Both good things.