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Discussion Starter · #1 ·
I am new to the SW world and just cycling my 1st tank.

Last night I noticed these on a piece of Live Rock in the tank.




Are they good / bad / indifferent?
I like the looks of them but just don't know...

Thanks
 

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Discussion Starter · #2 ·
More information.

They are out night and day.

Tank is at 79 deg F
Salinilty 1.025
Phosphates 0.25
Kh 7 / 125ppm (low as of last nigh WC happening today)
Ca 460ppm
Nitrates 0

will add Ph shortly
 

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They look like a species of star polyps.
 

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+1

I wouldn't be concerned. You might want to isolate the rock so it won't spread to other rocks as it grows. I have my GSP rock on the sand by itself.
 
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