Can anyone id these rocks

COCOBBALL

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So i made a purchase of some "coral rocks" and im not really sure what i got. The person selling to me was unsure as well. I paid $30 so i think i did ok.. i got a 100g tank full of it and the tank.

Any idea what it is?

Why is it top flaking off and so crystallized..is it salt?
20190301_191527.jpg
20190301_191544.jpg


20190301_191722.jpg


20190301_191604.jpg


20190301_191609.jpg
 
So i made a purchase of some "coral rocks" and im not really sure what i got. The person selling to me was unsure as well. I paid $30 so i think i did ok.. i got a 100g tank full of it and the tank.

Any idea what it is?

Why is it top flaking off and so crystallized..is it salt?
20190301_191527.jpg
20190301_191544.jpg


20190301_191722.jpg


20190301_191604.jpg


20190301_191609.jpg

Not sure, but I would consider acid washing these in muriatic acid. They aren't very porous.

They look aragonite based, but either were used and at one time were covered in coraline or just dry rock never used.

My concern would be leaching phosphates.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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  • Not yet, but I have one that I want to buy in mind!

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  • No.

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  • Other (please explain).

    Votes: 3 4.3%

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