Coralline disappearring

SaltwaterGuruNeeded

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Every 2 weeks, 10-20 percent. InstantOcean salt
Reef crystals or sea salt? And also it may be possible that your water changes don't have enough nutrients to keep the amount of Coraline you have to thrive. It's possible you could benefit from doing more frequent water changes or dosing to keep your parameters to a suitable level. Meaning alk, cal, mg. Ect. Aswell as the light you turned down. If you noticed a change in Coraline after you dimmed your lights, that could be it too.
 
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MaJuBo

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Is that coralife ‘life rock’? It looks like it. If so, it’s the paint chipping/sloughing off.
It’s a marco rock. I came white, the coralline grew on it. I do have a “life rock” in the tank, on top of the marco rock pillar thing. I am not a fan of it.
 
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MaxTremors

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Lol. I am afraid of hitch hikers. I do have 3 real live rock in there, to seed things.
I think the fear of hitchhikers is largely overblown. I can’t imagine having a reef tank without all the microfauna and hitchhikers, to me without them it’s not a reef tank, it’s a coral display tank.
 
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MaJuBo

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I think the fear of hitchhikers is largely overblown. I can’t imagine having a reef tank without all the microfauna and hitchhikers, to me without them it’s not a reef tank, it’s a coral display tank.
You are right. I’ll get there. Give me a year or so :)
 

littlebeard

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I vote check your alkalinity.

I've had a tough time getting it to grow in my tank over the last year. I went away on vacation for 2 weeks in june. Sadly the alk spiked from around 9dKH to 10.5. Wasn't great for the corals, however when I came back from my vacation it was like someone took a paintball gun to my tank and painted it with coralline algae.
 

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