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I just discovered nearby a pottery club, and I was thinking to create myself a few ornaments myself. Actually, I kind of have in mind hiding spots for the bottom dwellers.

So the question is: it pottery clay safe for aquarium? I plan to not have it "painted" with anything - except that the clay should be black in the entire volume.

Note: they have the special ovens and they can cook it for me.

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  • After a full firing, it should be fine, just as you can use that pottery to hold human food and drink.
    – keshlam
    Commented Jul 9 at 13:53
  • Agree if it’s safe for humans, probably ok in a fish tank. But if it’s unglazed, it’s likely to get covered in algae if your tank has any.
    – Pam
    Commented Jul 13 at 20:33

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