Need help please

kingderrick88

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Can anyone tell me what's growing on my live rock?
20190331_201202.jpg


water parameters are: Ammonia 0, Nitrite 0, Nitrate 0, Phosphate 0, salinity 1.026, calcium 420
 
Hi, welcome to the forum!
That suggests some kind of sponge to me as well.
Looks like a fairly new tank; you will find endless weird stuff popping up from time to time as it matures. :)
 
I can’t see it real well, and stupid question but is it plastic, maybe something dropped in the tank.

Unless it is stuck to the rock.
 
Welcome home, you will love it here!

I too believe it to be a sponge, but I am no expert with this subject matter.
 

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