So a few months ago I went to Petsmart and got two different styles of these Asian figurines that are in the shape of balls and look like they are made out of wood.
They were $5 a piece, in the fish section, said they were for fish tanks, and I have seen them in some other peoples tanks before.
Today I was cleaning my tanks and noticed the figures are bubbling! They have little odd shaped bubbles all over them and when I reached in to take them out they started popping and making a crackling sound, then began to chip. :/
They were both in two different fish tanks (one in a 14g with platies and one in a 2.5g with a betta) so I am pretty sure it was not a fluke they both did this.
I just wanted to warn everyone if they were thinking about buying these for their tanks.
I took some pictures of them: