I am using carolina buff clay for an aquarium ornament I am making. It has no grog and will be unvitrified. It also will not be glazed. does anyone know if this is aquarium safe. I have written the company but I have yet to get a response so I thought maybe you guys would know. Thanks in advace. BTW does anybody want some aquarium ornaments. I've gotten pretty good at making them. I just need to make sure they are safe before I actually use them.