Puzzled by dry rock/purple dots?

[bnr911]

I am very new at SW, but I have been slowly trying to set my tank up and do research, research and more research! So I finally got the tank up (75 gal), my sump plumbed, power heads installed, protein skimmer in place, added sand, DRY rock, salt & RO water. Did all of this last night. I woke up this morning to find purple dots ( I'm assuming it's coralline) on a few of my rocks. I didn't think that was supposed to happen so quickly. Is this cause for concern? I do not have any lights on my tank yet, just ordered them this weekend. My LFS told me it was ok to start the cycle without any lights, so I hope that was true. Any help in this matter would be appreciated.

[bribo12]

Definitely just old dead coralline algae spots. It can't grow without some light and would never start growing that fast. I wouldn't over worry about it


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[bnr911]

Hope this picture might help.

[BigRedsReefs10]

Is it hard or soft?

[bribo12]

Ooooh those are dead foramineferans. Nothing to worry about


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[bnr911]

Originally Posted by BigRedsReefs10

Is it hard or soft?

They are hard.

[BigRedsReefs10]

Originally Posted by bribo12

Ooooh those are dead foramineferans. Nothing to worry about


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^that man knows everything ^

[bnr911]

Thanks for the help. I am a mom, naturally I worry . Now though I am just going to wait my cycle out. BTW should I just leave them or clean them off?

[chefbill]

[QUOTE=bnr911;3008368 I do not have any lights on my tank yet, just ordered them this weekend. My LFS told me it was ok to start the cycle without any lights, so I hope that was true. Any help in this matter would be appreciated. [/QUOTE]

Not only is it OK to cycle without lights, it is preferable. Light in a nutrient rich soup of tank water + lights = algae.