Is this part of the rock, or something growing on the rock?

[brittant]

After over-lighting my tank and pretty much bleaching my live rock a few weeks ago, the color is finally coming back in. However, so are these brown spots. I'm concerned mostly because each one appears to have a small hole in the center. Am I being too paranoid about my rock, or is it something more significant?

 

[little_fish]

Its probably the start of algae. Also the rock turned white because you exposed it to air, not over lighting it

 

[brittant]

Really? I have a BioCube, and the hood is rarely open... The brown spots are also hard. Shall I just continue to let things be?

 

[little_fish]

No, when you put the rock into the tank you had to expose it to air, that will cause it to turn white

 

[brittant]

Ah, thank you :)