These were originally in my 65gallon tank broken down a few weeks ago.
These are definitely man made structures that are kinda of epoxy coated.
They were used however these are very dense, so could be use again quickly after an exterior cleaning. Not really any chance of these absorbing anything bad being they are so dense.
There are 3 structures in total plus a few other peices that weren’t ever used to make these structures. It might allow you ability to add to the existing structures or maybe more unqiue ones.
These are free to any supporting memebers. If you change your mind or want to stop using them in the future please give them away.
Location: santa clara.
