My live rock

[FindingPonyo]

Hey y’all,
Before I say anything, thank to anyone who will reply to my thread.
ANYWAY, after several months, the dry rock in a reef tank should turn purple and become live. The live rock that I’ve already had in my tank, the purple color has turned white. I don’t know if this is bleaching of sort but my parameters are fine, and my 3 coral frags are doing just fine and thriving. What is happening?

 

[Brad Waddell Wrath's Reef]

Coraline will bleach is your alk drops. Could still fine for the corals you have but to low for the coraline. This started to happen to me and I dosed Brightwell 8.3 and brought my Alk and PH up. Coraline recovered. I now dose 2 part and Mg. All is well now.

 

[Silverfish]

Perhaps the purple was a slime algae as part of cycling process. It died and now is showing white again. If you r using white rock it will take a while to get coralline algea.

 

[User1]

Tip, if possible, snap a few photos and post to help us put a visual on the problem you are describing. @Wrath has a good point about Alk. Have you tested that lately and with what kit? @Silverfish also raises a good question about cycling progress. Granted you mentioned several months has your timeline but that is a bit loose to go on.