So, I've been looking through dozens of sites for decorations, but nothing interesting to be found. My question is, fish? Are fish tank decorations a possibility? I asked the guy at my local Petco, he said they are coated with a waterproofing agent that is harmful to snakes, which I found to be strange. (on a side note he was only 18-19 years old and newly hired). But yea, is this true?

and conformation would be helpful